santa clara teenager who stabbed four people at uc merced was planning to do something worse. >> the 18-year-old was from santa clara. the photo on the right was taken recently. the sheriff revealed a hand written manifesto was found during the autopsy. he listed names of students he wanted to zip tie to death after being kicked out of a study group. the sheriff says he laid out the plan carefully, but things didn't go according to plan. >> his plan went haywire because people fought back. that is his badluck. the fortunate part is that we have a brave construction worker that stopped this from going on. >> what may have motivated him? we live with melanie woodrow. >> reporter: the sheriff confirmed that that manifesto suggested this may have come down of him being kicked out of a study group at uc merced, students described him as a very intelligent student, having few friends, being very quiet, and they're shocked by the news. counselors were on hand, though officials said current students did not know him. >> my friend said he was quiet but really smart. >> shocking because officials say the student stabbed two other students, a staff member and construction worker on uc merced campus wednesday. >> this person had greater intention to do harm. >> reporter: police shot and killed mohammed. the incident began in a classroom. he was a freshman computer science and engineering student. a bomb squad neutralized his backpack. >> in the backpack were two zip tie bags and a night vision scope. >> reporter: the sheriff says there was hammer and duct tape. >> there is nothing to indicate he was doing anything other than being a college student. >> reporter: his roommate said he was often alone. >> i'd try to say something, he'd just ignore it. >> reporter: family members of students were shocked you. >> you never know. this is too close for comfort. >> reporter: a young woman is telling her story tonight. megan kristofferson witnessed the dramatic end to the toeror that gripped the campus. >> the student was walking across campus and saw students running towards her. >> i thought it's just inactivity. and then, i realized they were chasing a person in front. and so he got closer. i noticed he had something in black. >> it was a hunting knife. she says the students backed off when two police officers took over. she says the suspect then stopped and one officer told the man to drop his weapon, but he didn't corps -- comply. >> he kept advancing towards him. the officer started saying do you want to get shot? you need to put it down. and then, he made a lunge at the officer. the quick motion towards him. >> reporter: megan was just 30 feet away and thinking she was in the light of fire. >> it was extreme panic and i just ran for my life. >> reporter: she says she heard two gunshots and saw officers standing over the body. she says she was traumatized by is planning to go back to school. >> i feel like this is just an isolated, unfortunate incident. and -- yes. so i mean it does make you feel a little less safe knowing this can happen on your campus. >> a former emf chief that was first to respond to the columbine massacre. >> it's terrible. the loss of life, the trauma people endure and people that aren't responders are victims. there are communities traumatized. >> reporter: he is teaching first responders how to prepare for attacks like the one at uc merced and says being prepared is critical since the violence can break out at any time. a bay area college spent the day training students on how to mentally and physically deal a active shooter. a mother running through the scene of an accident crashed her car. she is in the hospital and sadly, her child is dead. >> reporter: tragedy is really the only way to describe it. we're told the investigation is concluding. the saturn had been towed away after a minor hit and run involving a young mother in the hospital, ending with the death of her young son. >> that is a baby. the boy had not even lived life yet. >> reporter: neighbors are stunned over this terrible car crash that left a 2-year-old boy dead. police say the 30-year-old mother was involved in a minor collision, after hitting candice williams car, and took off. >> she came out of the houses and hit my car. i tried to walk up on her car, she sped off. and almost hit me. >> reporter: police say the driver left the scene, but made a u-turn and lost control of the car and struck a light pole. the baby son was ejected from the back seat and died. >> it was very sad. a life lost, a careless mom, driving reckless. i don't know what she was thinking not having a baby in the car seat. or not. >> reporter: police don't know if the child was secured in a car seat or if his mom was under the influence of drugs or alcohol. the child's mother remains in the hospital. authorities say she did not have a driver's license. a woman accused of hitting two middle school boys in a crosswalk in the marina district is now charged with four felonies. police say she had a blood alcohol level of nearly twice the legal limit. neighbors say speeding cars make crossing the streets dangerous in that area. a murder victim's family renewing the call to catch killer of a young single mother. she died after being shot two years ago. two other people were wounded near childrens hospital. henderson's mother hopes her sorrow will spur witnesses to contact police. >> nothing will take the image away from us. how she was taken away from me, and my family. it's devastating. >> we have received some information but nothing that can lead us to identification of a suspect. >> the fbi is working with oakland police to help find the killer and solve other cold cases. governor's brown's office is responding to allegations he used state workers as a private oil prospecting team. the associated press reports that he ordered teams to research and report back on oil drilling potential on his family's land. his office said brown was interested in the ranch's geology not drilling for oil and gas. his spokesman say the work did not violate any law. bay area fishermen are waiting for the other shoe to drop after the california fish and game district delayed crab season by 180 days. tests on crab show a high level of acid that is toxic to humans being caused by an algae bloom. professional crab fishermen expect their season delayed as well. >> they don't want sport guys harvesting crab and eating them and they don't want us to harm the public by harvesting to the public. >> crab sellers at san francisco fisherman's wharf say they'll bring in crab from washington state from now. the decision will be made in a few days and testing will continue. a san francisco bicyclist helped a 10-year-old boy got his phone back that was stolen. the bicyclist saw it happen and was able to go after the thief and recover the phone. the child was not seriously hurt, but startled. take a look at this outrageous robbery in santa clara. a man slams through a window and police say he stuffed $10,000 worth of sunglasses into a blue walmart bag and took off. you can only see part of his face. walking out of class to take a stand on violence and racism. a break in the case involving a hate-laced computer message that led to a student protest in berkeley. plus... what next in alameda after this chaos at city hall last night? the steps officials are taking to find a solution to rising rents. also... it's opening day at mammoth. could more snow be on the way for us in the sierra? >> tomorrow morning, more of the same. i'll have the accu-weather forecast coming up in just a moment as there is a break in a case regarding a disturbing message left on a computer screen at berkeley high. hundreds walked out to protest this racist rant and it ended with a frightening threat against african americans. abc7 news reporter lyann lyanne melendez is live. >> reporter: the student has not been identified. no name, or gender. the principal says the student will possibly be expelled and also that the student acted alone. just 24 hours into a racial posting the principal revealed how they found the culprit. >> we had a forensic analysis of the computer where this is found yesterday. >> reporter: the student admitted posting the racial comments yesterday inside of the school library. >> reporter: there were offensive messages threatening to have a public lynching. parents were notified via eechlt yale. the student's action prompted a rally to city hall and put their voices to uc berkeley. the cradle of the free speech movement. >> puts fear into a lot of people. >> reporter: last year a noose was discovered hanging here the school. the matter was never solved. >> i'm just scared the same thing is going to happen again. >> this is not a laughing matter. it's very offensive to the community. >> because it is considered a hate crime, the matter is being investigated by berkeley police. abc7 news. well, heads up here, starting tomorrow night you may face delays and detours into the next phase of construction on san francisco's central subway. crews will work on linking tracks at 4th and king streets to the completed tunnel. some muni lines will be rerouted and in cases, buses will replace trains. >> we're asking patience over the next several days and do everything we can to minimize the travel time impacts. muni shut off a tunnel in may. it issued to open in 2019. the t-line will go to advise tag tags -- visitation valley. cal train is calling for plans to increase prices and cal train's joint power board will vote on the proposed hike next month. the line averages 60,000 riders every weekday. crowds last night tried to push into a packed city council meeting. at issue, rising rent and what to do about it. we're live where we have learned one city leader was seriously injured last night. >> reporter: increasing housing costs are problems across the bay area. the cost of protections came at the request of two arrests. >> there is a victory and step forward. the hard work begins now. >> reporter: a figurative step forward after a hip breaking fall. he blocked the door over the meeting over a proposed moratorium. police say the 68-year-old bob davis tried to push through. >> he either does a leg sweep or grabs the city official's leg. >> he broke his hip and police arrested davis, facing battery charges. john klein was also arrested. >> that can't happen. >> i think we stepped up to the plate and had a unanimous vote. >> reporter: 65 days of no rent increases of more than 8% and no fault evictions are on hold. as city leaders face the daunting hike of long term protections, police are reviewing video from new body-worn cameras. >> this is the first time this happened. but we have many videos we're the actions were within policy. in alameda, abc7 news. >> mammoth mountain is open. you can see skiers, tickets today only $50. >> this is a look from our ta he camera. you can see snow-covered speaks. this happened so fast. >> it did. spencer christian is here to tell us what to expect. were you up early enough to feel how cold it was? temperatures down near freezing mark. >> oh, wow. >> i went back to bed. >> yes. >> good idea. i had to brave the elements. that is part of the job. we have mainly clear skies now and he clouds later in the day. basically clear out there. we have a frost advisory in effect near the area. 57 degrees in san francisco. 58 across the bay in oakland. most locations are in the upper 50s now. the mild spot is concord. 60 degrees. to a time lapse view, check out this setting sun this, is a view from emeryville this afternoon. it was afternoon. that was dramatic. with that, we'll take a look at the features that will be chilly again tomorrow morning. becomes wet sunday, showers lingering into monday. we have two systems coming our way. first, a weak front that is going to fizzle. and second system will bring us rain and we'll have showers following that. so starting at 4:00 saturday afternoon, clouds will be thickening. after midnight we'll have the first arrival in the north bay. that starts to sweep by 8:00 in the morning. will be wetter by 8:00 and the front sweeps through sunday night. and there will be more showers following on monday so that adds to rainfall totals a little bit. we're projecting a tenth of an inch to a quarter inch and that rain will produce sn sunday. overnight, chilly to cold again. low temperatures in the 40s. tomorrow, sunny skies, with high temperatures in the south bay in the upper 60s to 70s. and low 60s on the coast. downtown topping out at 64 degrees, highs upper 60s. and inland east bay, upper 60s to 70. here is the accu-weather forecast. not much changed until saturday when clouds thickened and sunny days after that. thank you. >> what would you pay for this palo alto shack? the asking price from a bay area real estate agent may surprise you. >> this is real life. a a smart phone ping, watch this video. the man near the table just reaches down and swipes her phone. williams took off after him and found him on the street asked if he'd taken the wrong phone. he sheepishly admitted to taking it, saying it was a mistake. one in ten americans have fallen victim to a smart phone thief. san francisco police say they'd like serena to call them and file a report. >> how much would you pay for this? a 180 square foot home in palo alto is on the market. it's being listed at just under $2 million. the shack is on a 7,000 square foot lot. the agent described it as an exciting opportunity to build your dream home. it's in the baron park neighborhood in palo alto. >> last night we showed you this man on a jet pack. tonight we're looking at a stunt that looks like it's out of an action movie. >> two men flying side by side with an air bus. you can see them darting in and around the jet. >> the flight shows just how far of a yigs has come. the airline says it took hours of practice and a lot of planning. >> that is spectacular. >> yes. >> imagine sitting on the jet, looking outside. >> yes. >> preparing for an emergency they hope will never happen. a day after a stabbing spree, a college is educating students on what to do in the event of an active shooter. plus... >> i'm an individual person. i have my own opinions. >> the owner of a local restaurant says parents of young kids shouldn't go out to nice restaurants. why she's standing by her statement. >> the bay area plan to get these smaller pods out on the streets. ♪ ♪ it took the rockettes years to master the kick line. but only a few moves to master paying bills on chase.com technology designed for you. so you can easily master the way you bank. with a 100% electric nissan what will you do? how far will you go? how much will you see? electrify the world. now with a class-leading 107 miles on a charge, the nissan leaf is the best selling electric car in america. good evening once again. we'll start with the latest developments n on the suspect in yesterday's uc merced stabbings. the sheriff of merced county says the suspect wrote a two-page manifesto. he named a list of students he wanted to tie to desks and harm. and he wanted to create more tragedies, as he put it, around campus. before yesterday's incident, south bay schools and colleges have been teaching students how to defend themselves and they held one of those exercises today. david louie explains what students learned in foot hill college. >> reporter: we've learned a sad lesson that college campuses are not save havens they once were and students need to know what to do. >> everybody walks around in a bubble. it can't happen to me. we're popping that bubble today. >> reporter: the class is called run, hide, and defend, challenging students to consider surroundings and be prepared to defend themselves if they can't run or hide. >> it's 2015. and i'm in a room full of people. i'm telling you you have to bonk someone with something. that is terrible but it's important for you to survive and to be safe. >> reporter: prior to the class, lisa wasn't sure she'd take on an asilent. >> i can take a fire extinguisher use that as a weapon, and telling police officers you need to do this gives you more of an okay, i will do this. >> visual clues are important if a person is using a knife instead of shooting a gun. >> if you hear shots, go in another direction. if you watch running because there is an incident, that is an idea of where to run. >> reporter: the class was developed by the police chief and county office of education. >> with all of the news going on with the shootings everywhere, now, i'm more aware. reports report at foot hill college, david louie, abc # news. police say a veteran police officer who staged a suicide put a hit out on a high ranking village administrator. he feared he would be caught. investigators say he set up a meeting with a high ranking gang member to put a hit on administrators he feared would expose him. investigators are talking to his wife and four sons to figure out what they knew. moving to the campaign trail. the secret service is confirming two republican front runners will receive protection. donald trump and ben carson will get details within days. it is a status symbol in a presidential race. this as nbc pulled an ad for snl hosted by trump this weekend, calling carson a total loser. snl follows the equal assess rules so other republican candidates are entitled to ask for time. hillary clinton will be back in the bay area. the democratic presidential hopeful attended an event in los altos yesterday. in between, she flew to los angeles for more fund-raisers and made a special appearance on jimmy kimmel live. a san francisco restaurant owner is explaining herself after taking comments about toddlers on facebook. she says it was a misunderstanding but some question whether they'll continue to dine at her restaurant. she spoke with chris nguyen today. >> reporter: after leaving work for the day, she stopped by a japanese restaurant. >> i don't want to be screamed at or children bouncing on me or hitting on me. it's frustrating. >> reporter: she shared her experience but it ended up on a cole valley neighborhood facebook page. in it, she wrote, this may shock you but choosing to have children means you can't go out to eat for roughly th years. please accept your fate. you're killing me. the comment, meant as a joke was seen by hundreds of people. some didn't find it funny. >> we all live in the city. we have to figure out a way to live together. i don't want to feel thate should have to hole up in our houses. >> reporter: others saying she is entitled to her opinion as an individual and people need to simmer down. >> what she said was something we've all done. you throw a comment out there. who hasn't been annoyed by a toddler in a restaurant at one point in her life? >> she can express what she's feeling in the moment and if the internet can calm district attorneying please. >> reporter: she has apologized, asking those in the neighborhood not to penalize her employees who come ready to serve day in and out. >> we have six high chairs, a childrens menu, i buy ornament kits to put together over brunch. we have always been a family friendly restaurant. >> in san francisco, chris nguyen, abc7 news. well, it comes down to supply and demand. the most-careful consumers are surprised by new [announcer] during mattress price wars at sleep train, save up to $400 on beautyrest and posturepedic. get interest-free financing until 2018 on tempur-pedic. plus, helpful advice from the sleep experts. but mattress price wars is ending soon. breaking news, sky 7 hd is live at baker beach where a rescue is under way for a man that got trapped on rocks at the bottom of the cliff. we understand he's several feet above the water. crews may have to help him swim out rather than pull him up to the cliff. we'll be monitoring this and bringing you the latest tonight. you can get breaking news by following us on twitter on abc7 news bay area. you know, with el nino here, many homeowners are busy getting ready for heavy rains that might be coming this year. >> the demand for new roofs could send prices skyward. >> most people know it's best to get several estimates but the wide range of prices and opinions for a roof repair might surprise even the most-careful consumer. richard and his wife lived in this home 45 years. this is the first time in a while that they needed to have work done on the roof. >> i figure it was 22 years, plus. i heard rain was coming so we decided we needed to have it serviced. >> richard isn't alone. lawson roofing told us the company hasn't been this busy in 100 years. >> lawson has more work on the books than ever. >> the threat of el nino has roofers backed up several months. the current wait to get an estimate is about two months. you'd have to wait another three months before work begins. it's so busy, two roofers, a seven on your side producer scheduled for an estimate on his home never showed up. it means many roofers can charge a premium. >> i'm sure prices are going up now once getting a backlog. >> our producer received four estimates, including one from a local trade group. the associated roofing contractors of the bay area counties. richard lawson looked at the leak and sent someone up for an inspection. >> you're looking at about $2500. >> we showed him three other estimates. one was for $13,000. the proposal covers work on a 15 square foot area versus the four square foot area lawson recommended. >> it's more conservative approach than i would take. i don't think it's necessary based on what i've seen. >> a second estimate was less expensive, closer to what lawson suggested, $1200. a third caught him by surprise. >> this is the entire estimate? >> the roofer never put his estimate in writing and did not chi climb up to inspect. he thought a similar job would be needed, replacing the roof. he recommending replacing the roof of $38,000. >> i would be suspicious so you can make a decision. all of the roofers were licensed with the state and carried a contractor's bond and worker's comp insurance. and get references. . >> i went by reputation and hearing from other people. there are no laws regulating how much a contractor can change. we have links on our website. tonight at 11:00, blinds that have been a known danger three decades. you can still buy them in thousands of stores. one family shares their tragic story tonight. you'll see the new fight to ban blinds with dangerous cords. i've been reporting on this three decades. >> wow. you still have this problem out there. >> thanks, michael. >> sure. >> just ahead at 6:00 a look at the transportation of tomorrow. >> it's straight out of . google isn't the only company in mountain view working on new forms of transportation. abc7 news explains public transit out of science fiction. >> a 3-d printed model assembled with little people, towering structures and these vehicles. it's not just an idea. they're designing this for the city of richmond, california. >> we can connect areas that would be desirable. >> bart is expensive, but cyber trap says its system is not. it only stops when someone pushes a button. >> other vehicles going to different stations not stopping. >> it's not a new design. >> this conference, pod car city is in the ninth year, but something is different. >> you're a student at san jose state? >> yes. i am. >> older people were just excited to see what the young people were doing. >> they're doing this. >> this is a hanging pod car. >> getting people to and from where they want to go rather than sitting in traffic and presuming. >> it's not necessarily a government problem or technology problem but chicken and egg problem. >> we have both sides waiting for the other side to move. >> the cities want to see technology working. some think the ideal place to prove it might be a clenl campus. >> throughout high traffic areas of san jose, and neighboring cities. >> you're thinking big? >> i'm holding out for transporter. >> i'm with you on that. >> yes. >> that is a good way to travel. >> here is spencer christian. >> a few high clouds around, it's mainly clear. south, we'll see powerful thunderstorms rumbling today, producing a tornado which touched down east. 9:00 p.m. covering northeastern texas and southeastern oklahoma. to california, sunny, dry, and calm, including the bay area, sunny skies, high clouds from low 60s to near 70s inland and here is the accu-weather forecast. the remainder of the week will be sunny and dry. >> excellent. >> thank you. >> talking 49ers football tonight. >> yes. >> what to do. what to do. what do you do if you can't run and your quarterback can't throw? >> the man who calls plays >> the man who calls plays with a 100% electric nissan what will you do? how far will you go? how much will you see? electrify the world. now with a class-leading 107 miles on a charge, the nissan leaf is the best selling electric car in america. ♪ ♪ it took the rockettes years to master the kick line. but only a few moves to master paying bills on chase.com technology designed for you. so you can easily master the way you bank. good evening, how much blame should collin kaepernick get for the terrible offense? if gabber can move the ball effectively, maybe the niners aren't as we think they can be. the line has been bad, running game just giving work may or may not help. >> it's important that we understand that just because blame happens to be in there, we're not trying to say, you know, lose qb. blame qb, tape at 11:00. it's an overarching thing and we're willing to try anything to try to get us going. >> jack del rio grew up as a raiders fan. the raiders coach talked about one of the most controversial plays, the immaculate reception. 40 years ago, the steelers were trailing raiders, 22 seconds left, terry bradshaw threw a pass that ricochetted and then, was caught off the shoe top by franco harris. this is long before the nfl used instant replay. and after 15 minutes of conferring the refs called it legal and the steelers won the game, 13-7. >> the catch shouldn't have counted. come on, let's be real. the ball hit the ground. but certainly appreciate the great players that played for the two organizations over the years. but right now, all we're focusing on is trying to put a good effort forward for sunday. >> i'm not sure we had indisputable video evidence. stanford, 11th in the first college football rankings. they need to run the table. first and fore most colorado saturday in boulder, that is a 10:00 a.m. kick off, pacific time. stanford should be able to run wild with christian mccaffrey. >> i can't wait. >> i love colorado. it's something. it's going to be a special week. >> cal visitsregon for the first time since 2013. jared goff's freshman year. saturday night, bears will have another chance to become bowl eligible. he says he's better prepared. >> in your college career, i >> in your college career, i played= [cheerful music] ♪ (michael) all right, everybody. this is your last meal.

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