grounds. and then stabbed an armed officer. that officer later died. police now saying they believe there was only one attacker involved here who was shot and killed by police. this is still a developing situation. >> along the bridge because we were only crawling along the bridge. there were bodies literally. >> ten. ten bodies. >> ten or 12. >> lying in different places along the bridge. >> it must be terrifying. >> horrendous. scott: the threat level has been at severe for quite some time so an attack is highly likely. i was in london this past fall reporting on the efforts to prevent attacks like this one. we will have more throughout the evening. team coverage continues now. lindsey mastis has more. lindsey: i want to show you what is going on in social media. this is from london police department. beus the street. they put out this picture. this is a flag over scotland yard at half-staff in honor of the police officer who died. the mayor put out a lengthy statement and parliament mentioned they will meet at the normal time at the house of commons and the house of lords will meet. celebrities ellen degeneres and politicians are sending condolences. there are people posting the images saying we stand with london, we are not afraid. pray for london. scott? scott: again, what we know tonight. four are dead including the attacker. at least 20 others injured. british investigators are calling it a terror attack. i'll have much more at 5:00 and 6:00 p.m. or when news breaks. if you have to step away from the tv stay connected with abc7 online and the mobile devices. we're updating platforms. michelle: the terror attack in london comes one year to the day after the coordinated attack in brussels. today at the airport, a memorial held for the victims, 32 people were killed when isis launched an attack there. and on brussels subway system. a minute of silence was held to remember the victims. alison: back at home and developing in d.c. a murder mystery today. a woman visiting d.c. found dead in the basement of a capitol hill apartment. the killer believed to have taken off in her car. our d.c. bureau chief sam ford has a desperate manhunt. sam in sam: -- sam? sam: the police are on the scene 24 hours after the body was found in the basement apartment here. according to police, 34-year-old corrina mehiel was living temporarily here in d.c. and we have learned she was working on a short-term gallery of art. the woman was unconscious and they found mehiel tied up and stabbed to death. no sign of forced entry. they say her car a 2004 prius with kentucky plates is missing. the police chief said they are seeking the public's health. particularly neighbors around 14th street northeast. >> my biggest message to them is if they have information about the car, which we believe at some point was in that block and they may have come or go. that would be valuable to get to the bottom of the case. sam: we see the police right now are dusting for fingerprints in that apartment. a search of social media shows she has been involved in the art projects in a number of places including cincinnati and asheville, north carolina. she was from bu carolina. we'll have more on the story coming up on "abc7 news at 5:00". reporting live from northeast washington, i'm sam ford, abc7 news. alison: thank you, sam. new from d.c. police today an update in the murder of ayana mcallister. a 19-year-old woman who was visiting home during spring break. police hope they have found a lead. she was shot while friends were recording a music video. the detectives are hoping the video will give them a look at her killer. michelle: on the hill, day three of neil gorsuch's confirmation hearings. to major -- no major alerts so far. this is a look as they are going on today. democratic senators pressed him on abortion rights and money in politicians. alison: meanwhile, a new twist today in the wiretap claims and relationship with russia. so house intelligence chairman nunez, a republican, is now saying sources told him members of trump's transition team and possibly could have been surveilled. just moments ago, the president was asked about it. >> do you feel vindicated by chairman nunez? president trump: i somewhat do. i somewhat do. i appreciated the fact that they found what they found. i somewhat do. alison: so nunez stressed here that this was legal. this was normal. it was incidental collection through the foreign intelligence surveillance act. but some of it was inappropriate. it comes with the new revelation about a former campaign manager cozy ties with russia. kenneth moton has the latest on that. kenneth: today, new questions about the person that was once the trump man in charge. paul manafort. the "associated press" out with a report in 2005 a decade before manafort worked for candidate trump he was secretly on the payroll of the russian billionaire deros russian president vladimir putin. the a.p. obtained business documents that they say shows manafort launched ambitious pro-putin strategy for millions of dollars. >> is there any tie between you and your campaign and putin and the regime? >> no, there are not. obsured. no by a -- sured -- it's absurd and no basis for it. >> now he says that smear and innuendo are used to paint a false picture. this week his name brought up several times after the f.b.i. confirmed investigation in the trump campaign in russia. >> is manafort a subject in your investigation? >> i'm not going to comment on that. kenneth: manafort, veteran g.o.p. operative and part of the trump campaign for five months. the campaign chief strategist ran the national convention for trump. >> to suggest that the president knew who his clients were from a decade ago is he was hired to do a job. he did it. that is it. plain and simple. ken in the: the white house says the reason manafort was fired over the summer the distraction of the alleged dealing with the ukraine pro russian party and trump was down in the polls. reporting in northwest, kenneth moton, abc7 news. alison: let's switch gears to the weather. spring began monday but it feels like winter today. a biting cold wind and it will freeze tonight. how cold will it get? doug: most areas in the 20's later tonight. we'll give you the numbers in a moment. but look at that. spectacular. crystal clear, plenty of sunshine but cool temperatures around the 50-degree mark in most areas as of 4:00 update. it's 49 in quantico. 46 in baltimore and frederick. 49 in fredericksburg. the average highs in the upper 50's this time of march. we will make progress. another cool day tomorrow. by friday and the weekend the numbers b the conditions, 7:00 tonight. sunshine. around 40. we drop through the 30's and in the 20's overnight. in fact we expect the wakeup temperatures in the lower 20's in suburban areas. it's 27 downtown. through the day tomorrow, another day filled with sunshine. maybe a degree or two milder. we will check out the weekend and the next ten days in nine minutes. michelle? michelle: see you then. thank you. downtown, a fourth security scare at the white house in less than two weeks but this time the fence worked. jeff goldberg is outside the white house. the security is constantly being tested. jeff: yes, it is. last night incident happened at the southwest grounds. this is a different location. a lot of the situations in the past happening on the north side. what happened last night a man tried to climb over the fence. but he got entangled on the top. the clothing getting stuck in the spikes there. he was apprehended shortly after that. situation. this follows an incident on saturday night in which a man from roanoke tried to get in the white house saying he had an appointment with the president. then he said he had a bomb in his car. he was arrested after that. also on saturday, another man jumping from a bike rack to prohibited area. he was arrested after that. the incident we have been talking about for a couple of weeks march 10, tv-year-old jonathan tran of california on the white house grounds for 16 minutes before being taken into custody. >> to have somebody steps from the president and get over the fence is embarrassing. >> people just want to get out there and get in the media. >> if they don't get that far, it's not, i don't think it's a big problem then. jeff: secret service is visible everywhere around the white house today. one of the issues looked at is increase the size of the fence from 12 feet to 13 feet. that is under consideration now. coming up at 5:30. we will hear from the security analyst who says the height of the fence should not be the primary concern. live in northwest washington, jeff goldberg, abc7 news. alison: thank you. coming up next at 4:00, abc7 staying on top on the latest developments in london. michelle: also next, healthcare on the hill. where it stands right now before tomorrow's key vote on the bill. alison: a little bit later changes are coming to the reagan national airport. first look at the construction project that will give the airport a much-needed facelift. >> plus, can breast implants give you cancer in the f.d.a. makes national headlines today. i have an update to the "7 on your side" investigation regarding women' michelle: if you are just joining us -- alison: an update on breaking news of the day. three people killed, more than 20 injured in a terror attack in london. the suspect is also dead. now the head of counterterrorism says a search is underway to make sure that there are no other attackers. the white house condemned the attack. president trump is monitoring the developments. now to a consumer alert. news is reverberating the country. michelle: we are talking about a possible link between interest implant and cancer. consumer investigator kimberly suiters has a major development this week. kimberly: it really is. the f.d.a. warned consumers that certain implants may cause lymphoma, cancer of the immune system. take a look. when "7 on your side" first reported about the implant and the cancer in february, the f.d.a. would only say there was a possible association. they have evidence that the textured implants likely caused lymphoma. this woman said she was never warned before the reconstructive surgery there was a rare and increased risk to develop another cancer. >> people all the time say you chose the implants. i didn't choose cancer. neither time. i can guarantee you if i had a choice and i i was about to put in my body could give me cancer, that is a choice. kimberly: something to note. the french f.d.a. says there is a clear link between implant and lymphoma. the world health organization says it can develop. they are also pointing to textured implant rather than smooth is problematic. silicon or saline was not matter here. "7 on your side" is going to stay on this story. back to you. michelle: thank you. consumer alert for the google maps users. you will soon be able to broadcast your location and the movement live to friends and family through the app. google believes the tall will be a convenient way to let you know how long it will be before you arrive. some wonder if the app may be sharing too much information here. alison: yeah. if you want any privacy at all >> right. your friends and family. that is one thing. the other people may see it as you may not realize is on the list. alison: got to think twice. abc7 on traffic watch. erik smith has more. erik: this is a tough ride. this is heading to the earlier crash that had it shut down on the southbound 29 past new hampshire avenue. actually new hampshire was closed southbound. this is a mess. 295 to eastern avenue is slowing down to maryland past 250. the delays start near the bridge and then it is a tough bridge either way. this is a tough ride. it's struggling and it's merging back to the through lane at this point. the capital beltway is slow as well. inner loop from silver spring to georgia avenue. expect the typical delays. also toward the legion bridge it's tough for both directions as you head past george washington parkway. slower ride. that is all from the traffic center. back to the desk. michelle: thank you. my complaint today is the wind. and the cold. alison: the sun helps you feel warmer. doug: if you are in the sun and it blocks the wind it's warm. there is one more day tomorrow. by saturday you will love it. alison: great timing. doug this is a look at the national harbor. capitalcapital wheel. the air is cool. most areas are upper 40's to 50. we will see the temperatures drop after the sunset. this is not as windy but it' the temperatures drop to the 30's by 9:00. check out the forecast low tomorrow. 27 at reagan national. 21 in hague and wint. -- winchester. this is one of the coldest night we will have for the rest of the month of march and this may be the coldest night we will see for a long time. till next fall and next winter. the last time we had the latest freezing temperature of the year. on april tenth it hit 31. 2016 was the last time we hit the freezing mark. sometimes we do it early. in 2012, the last freezing temperature was march 6. we keep on top of an improving temperature profile here once we get past the morning. tonight is clear and col the high pressure knock our winds down. sunshine and cool. then the warmup begins friday morning with a warm front. maybe a sprinkle. saturday we are looking for highs that are 73. yeah. take a look. a storm system could bring us rain. it's still mild at 65. we will stay on the mild side of things through next week. michelle? michelle: thank you, doug. yes, that is a snake on board a flight in alaska. a passenger on the previous flight left it behind. it was spotted by a boy climbing on his seat. unlike the movie this was not venomous. at least that was working for them. the flight attendant moved the the flight locked in the bin. alison: that is the thing of nightmares there. my goodness. okay. up next at 4:00, an airport upgrade. we don't know if there are snakes involved in this but we have a look at the changes coming to reagan national. michelle: later a blustery day for the blossoms. the national park service and abc7 are watching them closely. update coming up. this clean was like pow! everything well? my teeth are glowing. they are so white. step 1 cleans. step 2 whitens. crest [hd]. 6x cleaning*, 6x whitening*á i would switch to crest [hd] over what i was using before. incr...think it wouldotection in a pwork, but it does.dn't... it's called always discreet for bladder leaks, the super... ...absorbent core turns liquid to gel. i know i'm wearing it but no one else will. always discreet for bladder leaks. >> changes are coming to reagan national airport. a short time ago we got our first look at construction project to give the airport a much-needed facelift. sam sweeney is breaking it down. >> they are going to spend $1 billion to improve reagan national airport. this is the back end where the american airline flight go out of. this is going to look different as they build a concourse. they will tear out the old hangar building and building the concourse with 14 new gates. if you're a frequent traveler you probably know what 35x is. a multi-dy parture gate,y a bus and walk to the airport. that is no longer when it's complete. you never have to walk outside again. there will be new concessions on the screen. that is the first project. the second is a screening area. they will build 28 checkpoint lanes. where the national hall is and the big flag is and you wait in line for security now, that will be beyond security. so what does it mean for construction in the next few slated to be finished 2021. sam sweeney, back to you in the studio. alison: coming up next at 4:00, a deadly terror attack in the u.k. we are following the developments overseas. >> plus vehicles stoned along a major area highway. live in mobiletrak isjust wanna see ifa again? my score changed... you wanna check yours? scores don't change that much. i haven't changed. oh, really? ♪ it's girls' night they said business casual. i love summer weddings! oh no. yeah, maybe it is time. maybe i should check my credit score. check out credit karma today. credit karma. give yourself some credit. announcer: from abc7 news, this is a breaking news alert. michelle: if you are just joining us here at "abc7 news at 4:00", we are following breaking news from overseas terror in london. four dead including the suspect. 20 others are injured. a car ran in a crowd of people and on officer on parliament grounds was stabbed. the suspect among the dead. we are trying to nail down all the answers for you. when we have updates we'll bring it to you as soon as possible. if you have to step away from the tv go to our website wjla.com. our website works on all mobile platforms. back at home, vehicles along i-270 nailed by large kevin lewis is live with the ongoing investigation. kevin: the driver were going at highway speeds when they started to pepper the vehicles. i was so confusing the fist came in as a chain religion crash. >> tuesday afternoon rush hour. turned frightening along northbound i-270 near cloper road. three teens started to chuck the large stone at fast moving vehicles. >> four cars were hit, some with children inside. >> one witness was riding a motorcycle at the time and nearly struck by the stones. >> two weeks ago object shattered this window of a clair on the clara barton parkway. and a metro access van was pummeled with rocks driving down suitland. cases similar but probably not connected. >> if i had to describe the actions, i'd say naive. kevin: coming back out live. with so many cars on i-270, the troopers were not able to find the stones. the teenagers were able to get away. alison: let's talk about the weather. we have been on a roller coaster ride this winter and tonight every degree counts. michelle: yeah. doug: this afternoon the national park service says 7 are at the puffy white stage. final stage. by sunday it should be peak bloom of what is left. tonight is the 20's. if it states 27 or if it drops lower that could cause damage. the colder below that the worst it will be. fingers cross we stay at 28. after tonight we won't have any sub freezing temperatures. that is the story. we are the cherry blossom station. alison: we are. the official sponsors. doug: tonight it's cold. the numbers, potomac, 24, 23 in burtonsville. it's 24 in upper marlboro. 27, the magic number in downtown washington. close eye. steve will have a really important update at 11:00. join him for that. temperatures south of town are winds diminish by the morning. in southwestern zones on the low numbers. this may be the coldest night we endure until next fall or next winter. 49 tomorrow with the sunshine. 62 on sunday. maybe isolated shower in the morning. the weekend outlook is beautiful saturday. showers develop on sunday. highs of 65. we'll take that. >> that is for sure. it looks great. let's talk about the blossoms. hot, cold, hot, cold again. cherry blossoms and all of us have had one wild ride. michelle: we sure have. there is a lot of color at the tidal basin. richard reeve with a look at how to get a good view. park service cold night. >> blustery day. they are beautiful. >> all the petals emerging from the trees. >> a few days ago there was nothing. richard: that is despite overnight low in the upper 40's. >> there are still quite a few here. very nice. >> it hasn't been easy for the blossoms. this is what they look lake this past friday. >> they started to bloop early and the frost came to kill some of them. richard: half of the yoshino trees were at that stage but look now. you could call it a great cherry blossom comeback. look at them. but the question is will they survive? the national park service keeping close eye on the lows that are expected to plunge to the mid-20's. 27 or lower can be a kill zone for blossoms and even now there is not the same density of pink and wh years. >> they are still pretty. i hope more will bloom. richard: the park officials are confident that the blooms will pop. >> beautiful place to see. it really magnifies the beauty of the monuments. >> maybe even peak bloom by saturday or sunday. in the district. richard reeve, abc7 news. michelle: get out there and enjoy it. the family of robert levenson the former f.b.i. agent two disappeared in iran a decade ago is suing iran claiming they suffered due to the hostage taking and torture. he vanished in 2007. iran denies any hand in his disappearance. alison: the man responsible for some of the greatest television moments in history has passed away. chuck barris died at his home on tuesday. part of the craziest tv moments in the 1960's and the 1970's. he was 87. tonight a victory in fighting the heroin epidemic. feds in new york seized millions of dollars in cash and drugs. authorities uncovered six pounds in the bronx. they were hitten inside wooden furniture -- hidden inside wooden furniture from texas to massachusetts. three people are under arrest. >> a simple computer error is blamedded for deleting 100,000 police dash cam videos. the police chief was trying to transfer older videos to a new classification but made a mistake. the videos were deleted. warning are you sure you want to do this? >> we don't want them to say we are hiding things. announcing this happened and we will do whatever we can to fix it or prevent it happening again. michelle: major oops there. the chief doesn't think it will affect many cases. next for us at "abc7 news at 4:00" -- pope francis goes in to kiss a child. guess what happens next. she hugs and clings to him, wipes his head covering or starts crying. we will show you next. >> am so excited for keep pushing and getting an award for it. >> scholarship surprise. don't miss a moment a local university broke the news next. michelle: here is julie wright with a look at what is coming up thursday on "good morning washington." julie: hi, michelle. thanks. tomorrow on "good morning washington" we are celebrating national puppy day. the seven essential things you need to know before you bring home the adorable pooch. >> legendary guitarist and band leader from "the tonight show" kevin eubanks in the studio. >> keep it right here for traffic and weather every ten minutes tomorrow morning starting at 4:25 on "good morning washington." announcer: countdown to first pitch brought to you by -- alison: this is the holiest of hat heist. say that three times fast. she took the head covering off his head. michelle: he was going in to kiss her and she went for what she wanted. his reaction, laughter. it is so cute. she is 3 years old. that's probably not the first time. alison: you know the parents were mortified. michelle: extra prayer tonight for forgiveness. now to this. former vice president joe biden on the hill today meeting with the democrats to defend the affordable care act. alison: but he also made a couple of jokes. especially w asked him about the wiretapping allegations. take a listen. >> did your administration wiretap the trump towers? >> five or six times. >> are you joking? are you serious? alison: he was asked if president trump owes his predecessor an apology. he replied "any gentleman would." michelle: classic biden fashion. alison: coming up next at 4:00, the art of the deal. president trump hopes his capitol hill visit will close the deal on his party's plan to replace obamacare. alison: "7 on your side" with a consumer alert and the home sales are slowing in february. the dropoff comes after one of the biggest january boosts in a decade. despite the demand, there are fewer choices for those of you in the market to buy. the supply continues to ago to the day. president obama signing the affordable care act. even before the bill signings republicans have been pledging to dismantle it. and was an ally in the white house. they are closer than ever to reach the goal. a vote could come tomorrow. as we report, it's no done deal. reporter: democrats on capitol hill today are marking the seventh anniversary of the affordable care act. >> protect our care. protect our care! reporter: one day before the house republicans could vote to undo it. >> eliminating the affordable care act means eliminating a lot of things that people badly need. >> republicans are calling in the big guns. >> a big vote tomorrow in the house. >> there is plan "a" and >> a day after the president went to capitol hill. warning next election is on the line. >> the math isn't adding up. 22 republican no-vote would kill it in the house. by abc count at least that many republicans are on the fence. >> i have reservations as i said. >> trying to woo reluctant members the house republicans made payments to the bill, promising to boost aid for older americans to buy insurance. >> many house conservatives say it doesn't do enough to lower premiums and 25 said they were voting no, more than enough to kill the bill. in new york, abc7 news. michelle: tensions growing on the korean peninsula. running bills today. the air force b1b bomber conducted joint exercises. a show of force against the north that continued to launch missiles and testing rockets. alison: hours earlier a north korean test launch ended in failure. this comes three days after they claimed a breakthrough through the program. they claim the engine test works. at home a life-changing day for several high school students today. mike carter-conneen reports that they were ambushed in class by the george washington leaders and the school mascot and surprised with full ride scholarships. >> in a whirl wind across washington, a self-described prize patrol from george washington university surprised ten scholarship. the families got a head up a few days ago. >> torture knowing i had a great secret to keep from her. >> you are calm. >> i'm not. my heart is racing. >> this senior moved here from ver gin islands and lost his dad last august. a firefighter shot and killed while on duty. >> he would be proud of me. i wish he was here to celebrate with me. >> this is a full ride schola >> i would have went even with the financial burr dones but that is take -- burden but i'm happy. >> my mother has my little brother to worry about. now i'm grateful that i am able to take great burden off of her. >> the 17-year-old plans to study criminology and become a public servant like his let father. michelle: a proud day for the kids ands the parents as well. steve: we love when they do that. my gosh, everything, room and board and tuition. >> a big savings. >> awesome! alison: we have to ask you because the cherry blossoms are in question. steve: i now we have the temperatures tonight that will drop in the 20's. that is critical. we will know more tomorrow. the temperatures around 24 to 25 degrees. it does not look good. outside now, 43 in cumberland. 46 in leesburg. 49 at reagan national airport. plans this evening? maybe walking over to check out the cherry blossoms in the 40's early on and dropping to the 30's by 9:00. mainly clear skies out there. it's a hard freeze again with winds from the north at 5 miles per hour. tomorrow morning 20, 25 degrees. 21 in manassas. once again at 23, 24, 25 around tidal basin, that is bad, bad news. the wind chill factors tomorrow not a in the lower 40's. lots of sunshine. future cast will build across the mid-atlantic. the warm front will boost our temperatures. we are talking about the temperatures in the lower 70's. mid-60's and rin on sunday. 70 on monday. and mild for the rest of the week. erik smith is on duty in the traffic center. what is going on? erik: hey there, thank you. a busy ride. we take a look at the crash on the southbound new hampshire avenue heading past colesville road. southbound, new hampshire on the left is still blocked at this point. this is a big deal for white oak in both directions. looking at the delays on d.c. sun glare here as well but a tough ride for 395 south. this is heavy past 50 in maryland. a lot of the traffic heading by. police activity to the right side as well. looking at 270 northbound to gaithersburg. tough ride. that is all for now. back to alison. michelle: thank you, erik. next at "abc7 news at 4:00" -- most in the morning brew. not all coffee makers are the same. the cleaning process you must follow to keep the coffee clean, next. alison: we are following the latest on the apparent terror attack in london. we have an update on t john: do you clean your coffee maker? a mom wonders if it might be causing health problems after opening it up and discovering something stephanie loves coffee but she is having a bad reaction from the coffee at home. >> i have my coffee at home and three sips i'm having reaction. john: a friend forwarded her article about the mold and bacteria in the coffee pot, she brought it to work and opened it up. >> horrifying. horrifying. it was my reaction. >> she couldn't believe what was under the top. several years of the calcium buildup and a brown substance that looked like mold. some coffee makers are easy to clean. you get a glass carafe and easy to dry tank. but her machine is not one of those. >> it's impossible unless you dismantle the machine. i haven't figured that out yet. >> nowhere is there any info on how to dry out the water >> i don't know how to open up and see it inside. >> she is sending a sample of the buildup to a lab. what request you do to protect -- what can you do to protect your family? most say to clean it with white vinegar to help disinfect. she has a message for everyone with a home coffee maker. >> you need to clean the area. >> they suggest once a month to run a vinegar cycle. you will keep it clean and you don't get mold and you don't waste your money. >> tonight, terror in the shadow of big ben. a deadly confrontation with the attacker. an artist visiting d.c. found tied to a chair. life-saving phone conversation. why a local policeman counts his l with an e.m.t. chaos in the streets of london after a car drove through a crowd and shots rang out at parliament. four are dead and 20 others are hurt as this unfolded on the westminster bridge. scott thuman has the latest on what is exampled a terror attack. >> even though the terror alert level in the u.k. was at severe and an attack was likely this has stunned london. >> a horrific scene in london. >> ten bodies. literally. ten or 12. shot. lying in different places along the bridge. >> four people were killed including a police officer. >> i see one car to the wall. people started running all over. >> the man carrying a knife was able to get on to parliament grounds and stabbed an armed officer who later died. police opened fire and killed the man. >> they went to help. >> 20 were hurt. some injuries described as catastrophic. the white house condemning the attack and trump spoke to theresa may to applaud response from the emergency crews. >> we obviously condemn the attack in westminster which the united kingdom is streeting as an act of terrorism -- treating as an act of terrorism. scott: we haven't seen claims of responsibility but it has the hallmark of others for