Decision they nearly made. Nightly news begins right now. Announcer from nbc World Headquarters in new york nbc nightly news, lester holt. Good evening, a big break in the family murder mystery in washington, d. C. We have been telling you about the last several nights. Tonight, police from washington to new york are on the trail of a 34yearold man suspected of holding an affluent couple their young son and housekeeper hostage before killing them leaving their bodies in the familys burning mansion. The break right out of a csi episode. A pizza crust and a dna match, how police did it in a moment. First, the suspect. A man with an parent previous connection knew his alleged victims. Peter alex daern is on the story. Reporter lester good evening. Police say the suspects in these vicious murders is a former employee of his iron company. One of the suspects relatives was fired from the company. Police say the suspect is armed and dangerous. His whereabouts unknown. A major break in a horrific crime. Detectives matched dna from pizza crust to Darren Dylan Wint suspected in the murders. The 34yearold maryland man wanted for dirsfirstteg murder may be hiding in new york after taking a bus to see his girlfriend after leaving her apartment early this morning. It does not appear this was a ran random crime but there is a connection through the suspect. Reporter he was ceo of american iron works where police say wint once worked. He has a criminal record. In 2010 he was arrested outside of american iron works carrying a twofoot long machete. Weapons were dropped after he pleaded to containing open alcohol. Do you believe that wint was acting alone sf. We have not ruled out there was others involved. I cant comment beyond that. Reporter the terrifying ordeal began last week his wife son and housekeeper all held captive inside. A clerk tells nbc news that they delivered pizza not aware a hostage was there. The next morning, his assistant delivers a cash with 30,000 to the home. Police believe the victims were killed and the house set on fire. Sources say the fire was on the secretary floor in 10yearold philips bedroom. The adults found nearby beaten and stabbed. Police say this Surveillance Video shows wint running away to where detectives found their porsche abandoned and torched near his land known address in maryland. Peter alexander, washington. This is tom costello. Criminal experts say Dna Technology has come a long way since the o. J. Simpson trial in 1995. Today, they can get a match from a sample as smalls a fingernail or smaller. At the Forensics Lab in maryland they test 2000 samples and dna has a long shelf life. It could last for a very long time z are we talking days, weeks, weeks months. A criminal can leave dna evidence at a crime scene without knowing it. Skin cells on a gas stain, saliva sells on a wine bolt blood, saliva and other bodily fluids. They recovered dna on a pizza crust to identify the suspect. When you take a sip of something or you bite something, you are leaving saliva and your dna on that sample. Typically, there will be a lot of dna in that. All they need is a sample that would fit on the end of the cotton swab. The chances that two people would share the same dna, 1 in several billion. The national dna database contains more than 11. 6 million dna profiles from convicted felons and another 2 million from suspects that have been arrested. When dna is identified it is often entered into the fbas combined dna system or codis. If it finds a dna match anywhere in the country, police can identify a suspect. Cutting Edge Technology that is changing the way Police Identify and track down violent criminals. Tom costello nbc news. Tonight, the governor of california has declared a state of emergency as crews race to clean up tens of thousands of gallons of oil that gushed into the waters off some of the most pristine shoreline in america when an underground pipe burst near santa barbara. Tonight, nbcs Miguel Almaguer has a new view that reveals the scope of the damage from the air. Reporter lester good evening. This is one of the most spectacular, one of the most beautiful coastlines anywhere in the world. Tonight, from 500 feet above the pacific ocean, you can see this area is clearly stained with oil. So far, the impact to wildlife has been mostly minimal but you have to keep in mind this oil spill is only a few days old. Environmentalists say the true impact on not Just Environment but animals will take several days if not weeks, to be realized. There is hope tonight that the weather is helping the cleanup. The waves and the wind have been relatively calm keeping this oil mostly intact. It is certainly going to take some time to clean up the mess. So this spill wasnt a massive one. The impact on the environment may take months if not years, to be realized. Im Miguel Almaguer 500 feet above the coastline. Now, to my colleague, howie jackson, who is on the ground. Reporter today, a new Vantage Point from offshore looking toward where the oil spilled into the pacific from this culvert, a focus of the cleanup. Both set booms to contain and absorb the spill as it gets bigger. I see a big mess. We are fortunate it was contained rather quickly but oil did get into the ocean. Reporter a sea lion swims through the slick and on land we are there as another is brought in. This is the first sea lion we have seen that may have been affected by the oil spill. Crews will be transporting it to look at how healthy it is and how to help it recover. Reporter some animals discovered dead but rescuers are hoping to save at least five pel pelicans they found. I anticipate we will start seeing more. Reporter the spill raising questions about the company that owns the pipeline that burst tuesday, plains all american. Federal records show 175 Safety Incidents since 2006 causing nearly 24 million worth of property damage. Reporter is your company safe enough . Again, we have a very detailed audit. We consider ourselves very prudent operators. Reporter the company says it is committed to doing the right thing in this clean yuchup. The spill is the first major problem since 1987. As much as 105 thousand gallons of oil leaked a fraction of the exxon valdez spill and the deepwater horizon, 134,000 gallons. This isnt a gulf size spill by any means but it has wrecked the place. Reporter the cleanup has moved into a 247 operation with crews recovering 8,000 gallons of illy water so far. Still, a way to go to get the beach looking like it normally does. Hallie thank you. There are reports that isis has seized syrias last Border Crossing with iraq. Isis now controls half of syria. Territory which as of tonight includes a city of ancient treasures where isis is on the brink of erasing history. We get more from richard ingle. Reporter another city fallin to isis. This time it was Syrian Government troops who ran away as isis stormed into palmira. It isnt just another town but has Lucrative Oil and grass and a cradle of western civilization about to be robbed. Palmiera had majestic ancient ruins, a 2000yearold roman city preserved. Isis has promised to bulldoze it like it razed archaeological treasures in iraq. They believe these idols of pagan empires need to be eradicated. Historians say it is a culture genocide. If we use palmyra, we use one of the top cultural sites in the middle east. Watching isis intentional destruction and blatant encouragement of looting archaeological and cultural sites throughout their held regions has been devastating. Reporter it is not getting better. After taking the key city of ramadi in iraq last weekend, the terrorist sanctuary across syrian iraq is now larger than a small european country. The world awaits expect horrible images to come from palmyra. More death and culture being erased. In an interview, the president said he does not think the u. S. Is losing the war and described the recent loss of ramadi as a tactical setback but military analysts have been speaking to him and military Officials Say the current u. S. Strategy isnt working. Richard, thank you very much. Tonight, police in omaha, nebraska your mourning the loss of one of their own, a Police Officer who recently became a mother for the first time. She was only a day away from taking a leave to be with a leave with her new baby until a confrontation put her in the line of fire. Nbc Kevin Tibbles has the tragic story. Reporter it was wednesday when officer terry irasco a sevenyear veteran of the omaha police force, was shooting a warrant when the shooting began. She was shot and rushed to the nearest trauma center. Doctors were unable to save her. Police were attempting to arrest 26yearold marcus wheeler, who they say was a known gang member on assault charges. He was also killed in the shootout with his automatic handgun by his side. One of her partners remembers her. She just saw people for who they were. The great thing was, she saw the good in all people. Reporter her service went far beyond the police force. She coached baseball and volunteered her time with the girl scouts and the special olympics. Celebrating the birth of her first child, a girl born prematurely, she and her husband were going to bring baby olivia ruth home. She also had two young stepchildren. Outside Omaha Police Headquarters came all day many strangers to pay respects. I have four kids. For them to have to miss their mom, it is awful. We knew she was present when she was there. Reporter on a downtown street army veteran, ron ferguson stood alone in tribute. Sad. She lived a life for others and well all be together someday. Reporter officers name will become the 25th engraved on a monument for those that have lost their lives in the line of duty. Late word from baltimore where the state Attorney Says all six Police Officers charged in the death of freddie gray have been indicted by a grand jury. His death set off days of protest last month. Prosecutors say his neck was broken during an arrest when he was handcuffed shackled and placed headfirst into a police van without a seat belt. He died a week later. Still ahead, a warning about a new generation of prenatal tests. Everybody wants to know the health of their unborn baby. New tests promise we all enter this world with a shout and we see no reason to stop. So cvs health is creating industryleading programs and tools that help people stay on medicines as their doctors prescribed. It could help save tens of thousands of lives every year. And that would be something worth shouting about. Cvs health, because health is everything. Allergies distracting you . When your symptoms start. Doctors recommend taking claritin every day of your allergy season. Claritin provides powerful nondrowsy 24hour relief for. Fewer interruptions from the Amazing Things you do. Every day. Live claritin clear. Congratulations. Youre down with crestor. Yes when diet and exercise arent enough, adding crestor lowers bad cholesterol up to 55 . Crestor is not for people with Liver Disease or women who are nursing, pregnant, or may become pregnant. Tell your doctor all medicines you take. Call your doctor if you have muscle pain or weakness, feel unusually tired have loss of appetite, upper belly pain, dark urine or yellowing of skin or eyes. These could be signs of serious side effects. Im down with crestor make your move. Ask your doctor about crestor. Success stts with the right connections. Introducing miraclegro liquafeed universal feeder. Turn any hose connection into a clever feeding system for a wellfed garden. Miraclegro. Life starts here. Pain from your day can haunt you at night, dont let it. Advil pm gives you the healing sleep you need helping you fall asleep and stay asleep so your body can heal as you rest. Advil pm. For a healing nights sleep. Constipated . Yea dulcolax tablets can cause cramps but not phillips. It has magnesium and works more naturally than stimulant laxatives. For gentle cramp free relief of occasional constipation that works mmm mmm live the regular life. We are back with an eye opening report in our special series would you want to know about the new medical testing in dna. The new medical test given to pregnant women to check the health of their unborn babe bichlt a sim blood tests promises more accurate results earlier than ever. There are growing concerns these tests have been oversold and misunderstood. Our national correspondent, kate snow reports. Reporter when stacy and Lincoln Chapman were expecting their first child. Her Doctors Office recommended a new blood test to check the unborn babys dna. Then stacys doctor called for terrible news. The test was positive for something called edwards syndrome. She explained to me if the baby did survive to full term he would survive maybe hours, maybe days. Reporter you must have been devastated . Uhhuh totally devastated. Reporter they made an appointment to terminate the pregnancy the very next day. We didnt want the baby to suffer. Reporter that night shall the doctor called back and suggested they should wake after eight long weeks stacy had an am neosin tee sis and an even bigger shock, her unborn baby was fine. I still didnt believe it. I just didnt know what to believe anymore. I knew but i was afraid to believe it. Reporter how long did it take you to believe . Until they put him in my arms and they lifted him and showed him up above the screen. I just couldnt believe he was ours. Reporter these prenatal dna tests given as early as ten weeks are marketed for their accuracy. The maker of the test stacy used said in high risk women a positive result for edwards syndrome is right 97. 6 of the time. Several studies and indiana vest investigation casts doubt on the prenatal tests when they have positive results for disease. A study last year found a positive result on one popular test not the one stacy used could be wrong more than half of the time. Leading ob gyn dr. Michael green said tests like stacy took are looking for the risk of disease, not dying nosing that a child will be born with it. Reporter before a woman makes an ir revokable decision she shouldnt make it based only on the screening test. It must be made on the diagnostic test result. Reporter the make ter agrees it is not a replacement for a diagnostic test. Other manufacturers recommend women have genetic counselly and the results be confirmed. Stacy and lincolns boy, sam, is a happy, healthy, 18monthold. Reporter do you think about what might have happened . From time to time when he is playing or he does something funny. Well say, can you believe this . Reporter the sweet face of a little boy showing the limits of the brave new world of genetic testing. Kate snow nbc news, providence, rhode island. Were back in a moment with the changes coming to an old family favorite which is also we live in a pick and choose world. Choose choose choose. But at bedtime . Why settle for this . Enter sleep number. Dont miss the memorial day special Edition Mattress with sleepiq technology. Sleepiq tells you how well you slept and what adjustments you can make. You like the bed soft. Hes more hardcore. So your sleep goes from good to great to wow only at a sleep number store. Save 500 on the memorial day special Edition Mattress with sleepiq, plus 36month special financing. Ends monday know better sleep with sleep number. 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Smash it with Jublia Jublia is a prescription medicine proven to treat toenail fungus. Use jublia as instructed by your doctor. Look at the footwork most common side effects include ingrown toenail, application site redness, itching, swelling burning or stinging, blisters, and pain. Smash it make the call and ask your doctor if jublia is right for you. New larger size now available. The National President of the boy scouts former defense secretary, robert gates, says the organizations long standing ban on openly gay scout leaders is no longer sustainable and called for a change in policy. The boy scouts ended the ban on openly gay youth as scouts but left the adult ban in place. Domestic violence charges have been dismissed against former Baltimore Ravens player ray rice caught on tape punching his future wife. A judge signed after after he completed a Pretrial Intervention Program permitted in less than 1 of cases in new jersey. Under the program, rice underwent anger management counseling and paid 125 in fines. Some news that is frankly kind of ridic. The skrabl dictionary is adding 55 new words including vape emoji, and hashtag and ridic, short for ridiculous and also you can continue to make words up like the hey, how you doin . It hurts. This is what it can be like to have shingles, a painful, blistering rash. If you had chicken pox the shingles virus is already inside you. 1 in 3 people will get shingles in their lifetime. I wish that there was something i could do to help. The shingles rash can last up to 30 days. Talk to your doctor or pharmacist about your risk. People with type 2 diabetes come from all walks of life. If you have high blood sugar ask your doctor about farxiga. Its a different kind of medicine that works by removing some sugar from your body. Along with diet and exercise farxiga helps lower blood sugar in adults with type 2 diabetes. With one pill a day, farxiga helps lower your a1c. And, although its not a weightloss or bloodpressure drug farxiga may help you lose weight and may even lower Blood Pressure when used with certain diabetes medicines. Do not take if allergic to farxiga or its ingredients. Symptoms of a serious allergic reaction include rash, swelling, or difficulty breathing or swallowing. If you have any of these symptoms stop taking farxiga and seek medical help right away. Do not take farxiga if you have severe kidney problems, are on dialysis, or have bladder cancer. Tell your doctor right away if you have blood or red color in your urine or pain while you urinate. Farxiga can cause serious side effects including dehydration, genital yeast infections in women and men, low blood sugar, kidney problems, and increased bad cholesterol. Common side effects include urinary Tract Infections changes in urination and runny nose. Do the walk of life yeah, you do the walk of life need to lower your blood sugar . Ask your doctor about farxiga. And visit our website to learn how you may be able to get every month free. Maybe you have noticed recently a lot of famous faces sporting red noses, all because of red nose day, a special event airing on nbc featuring a parade of stars having a laugh for charities, including one that helped save the life of a young man you are about to meet. Joe pryor has his story. Reporter if this runofthemill junior football varsity practice seems unusually riveting to the family of 15yearold efran gonzales stop and consider what nearly slipped through their hands. When you almost lose your child, it changes everything. Reporter here along the desolate desert grass of southeast arizona, medical care for kids was once scarce until a few years ago when a big, blue stranger pulled into town. Dr. Darlene milk now travels in a mobile clinic run by Childrens Health fund. I love feeling like im in a place where not many people want to be that there is something that i can do that makes a difference. Reporter no one is turned away including efrans family in 2012 when they had no Health Insurance and he became very ill. We literally were holding him up to walk to register in when she peeked out the window and she said whats wrong . Reporter did you pretty quickly know what might be the wrong problem . She diagnosed him with diabetes and knew he had to get to a hospital immediately. I was weak scared just like my body was shutting down on me. Reporter his family rushed him to an emergency room 75 miles away just in time. Without the mobile clinic he would have gone into a coma and i dont want to say what the outcome would have been. Reporter efran is grateful for that Doctors Office on wheels and now hopes red nose day will raise enough money to put more mobile clinics in places that need them. You never know what could happen. It saved my life. Reporter these days it is not just clinic thats going places. Joe pryor, nbc news douglas, arizona the red nose day special event with hosts, Seth Meyers David duchovny airs tonight. Thats going to do it for us on this thursday night. Im lester holt. For all of us, thank you for watching and good night. Hl. Inside the allstar sendoff to David Letterman from the backstage candid moments to the vip afterparty. Now on extra. For the last time on a Television Program thank you and good night. David letterman signs off. His wife and son making a rare appearance. Really nothing else matters. Four president s countless superstars toasting and roasting the king of late night. Thanks for finally proving men can be funny. And who crashed davids after party and got seriously drunk . New video kris jenner on a double date. Reports today her son Rob Kardashian quietly checked into rehab. Johnny depps mystery emergency. Did johnny suddenly leave the set of his new pirates movie . Sarah palins new family scandal. The first interview about daughter bristol postponing the wedding. Issues have to be worked out. Plus jack Nick Collison the stars front row ass the stones roll into l. A. The rolling stoning now on