Nightly news begins right now. Announcer this is nbc nightly news with lester holt reporting tonight from chicago. Good evening. We begin with breaking news a suspected deadly terror attack in paris tonight where a gunman opened fire using a militarystyle weapon on Police Officers along Champs Elysees sending people running for cover. Isis claimed responsibility, and at this hour, police and soldiers shut off much of the shopping district telling tourists to return to their hotels. Authorities have been on alert to the opening round of balloting in the french president ial election. Here at home President Trump offering his condolences after learning at least one Police Officer was killed in this evenings kier sill monmmons has details. Reporter terror in the heart of paris on the world famous Champs Elysees packed with tourists, a gunman opened fire on policemen. Frightening moments caught on social media. The attack just happen the man says. One of the officers killed, two others seriously wounded. Three guys come down in an audi car and shoot the police and kill one of the police and one is injured. Reporter the assailant shot down e asa asd s they fire back. He came out with a kalashnikov he said. Forensic officers examining the car reportedly used in the attack. All leads point to terrorism the french president telling the nation. President trump responding during a News Conference with italys leader. What can you say . Just never ends. Reporter just two days ago, two men were arrested in france suspected of planning an attack to disrupt the election after bombmaking equipment and guns were seized. Attempted to target a group of soldiers guarding another landmark was shot by police. And in november 2015, multiple attacks by isisbacked terrorists in paris killed 130. France has been in a continual state of emergency ever since and now preparing to vote in elections, the first round sunday. Marine le pen focused on security and immigration. Tonights attack as candidates make the last pitches on a live televised show, a city and nation on edge once more. And tonight, isis social media accounts quickly taking credit for the attacks quickly identifying a man from belgium as the attacker suggesting this was planned and the timing with voters heading to the polls on sunday, intentional. Lester. Kier simmons tonight, thank you. We turn to another violent incident involving Police Officers, this one here at home in seattle. Two officers were shot while responding to a robbery call. One officer is in Critical Condition with lifethreatening injuries and the other is in quote satisfactory condition. At least two suspects are in custody and police are searching for a third. Now to another major story were following, u. S. Forces on high alert by north korea. Officials tell nbc news u. S. Spy planes are monitoring for any move made by kim jongun and at a late News Conference today, President Trump addressed the growing crisis over north korea while again offering a dark assessment of iran. We get details from nbcs hallie jackson. Reporter tonight a military exercise as the north appears to position itself to conduct a nuclear test with little or no warning according to intelligence. The military is deploying a special sniffer aircraft that can detect evidence with drones and spy planes. President trump today alongside italys prime minister. As far as north korea is concerned, we are in very good shape. And were going to see what happens. Hes basically saying nothing to see here. In fact, the situation is tense and dangerous and were a long way away from resolving the crisis. Reporter to convince north korea to turn down the temperature, administration is leaning on china. Some unusual moves have been made over the last two or three hours and i really have confidence that the president will try very hard. Reporter the president didnt specify what chinese moves he meant and isnt saying what he would do if north korea does test a nuclear weapon. The first time under his presidency, instead, preferring to preserve the element of surprise. Thats been a hallmark of his Foreign Policy so far and today on the foreign nuclear deal, another startling break. They are not living up to the spirit of the agreement. I can tell you that. Reporter but just two days ago, his own state department acknowledged iran is holding up its end of the bargain. Another step for donald trump toward developing a doctrine of unpredictability. The president s first foreign trip will be to italy for the g 7 summit with key allies and plans are also in the works to try to meet with the pope, that would come more than a year after pope francis gently criticized the idea of a border wall with then candidate trump, remember, calling those comments disgraceful. Lester . Hallie jackson at the white house thank you. Tonight, more than a monthlong man hunt for a high schoolteacher and his 15yearold student has come to an end. They were found thousands of miles away from where they vanished. A single tip led to the teachers arrest. We get details from nbcs miguel almaguer. Reporter the arrest and rescue happened early this morning i Northern California in the keep forest of cecalville, high schoolteacher tad cummins was taken into custody. Police finding his 15yearold student, Elizabeth Thomas safe. A tip led them to the suspects nissan rogue and an isolated cabin. Elizabeths family getting the news 39 days after she vanished. Were going to have to figure out what kind of state of mind shes in of course and probably get her some help but maybe, maybe a long road but, you know, at least we got her back now. Reporter investigators believe 50yearold cummins manipulated the teen. The pair reported missing march 13th near colombia, tennessee. Two days later picked up on Surveillance Video at an Oklahoma City walmart with died hair. After 1500 tips, one lead last night took investigators 2500 miles away. They have taken up residence in a cabin in cecalville, california. Reporter with cummins on the run for five weeks, his family publicly begged him to come home. He faces kidnapping and Sexual Misconduct with a minor. Conduct with a minor. After vigils with elizabeth, soon shell be home. Im very happy. Very happy. Reporter tonight one of tennessees most wanted is behind bars and the teenager he vanished with is safe. Miguel almaguer, nbc news. Now to the fallout from the bombshell at fox news, the firing of its biggest star bill oreilly, were learning the details about his multi Million Dollar payout along with new indications that his departure will not put an end to the scandal rolling the network. We get details from nbcs ann thompson. Reporter bill oreilly leaves with a 25 million check say sources with knowledge of his contract. The severance amounts to a years salary of the four yeardeal he just was out while riding to the airport in rome returning home from a vacation and that included meeting pope francis. Gabrielle sherman reported about fox news for several years. Did the Sexual Harassment claims end with oreillys firing . Im hearing from my sources that the company is continuing to hear from women. This is a culture that long predated bill oreilly. Reporter sherman also says there are new claims of racial discrimination. She went on the view with her story of what oreilly said when she was a temp. He walks past and says, hey hot chocolate. Reporter a fox news spokesperson says they are unaware of any new claims. Oreillys firing comes less than a year after ceo roger ailes was ousted. Oreilly and ailes were paid 65 million to leave, the women that accused them so far, 33 million. Today the board of 21st century fox, the Parent Company of fox news met in new york. Potentially at risk, its attempt to buy europes giant sky. Pass a fit and proper test by a british regulator. With the ailes affair last year, it shows a pattern, an absence of the right corporate governance. Reporter fox news will address it promptly and confidentially. Women there dont feel their climbs are taken seriously. Reporter even after a powerful man is gone. Ann thompson, nbc news, new york. Now to a legal twist of fate that has a lot of people talking as the Trump Administration moves aggressive ly to stop illegal immigration. Its caught up in a legal dispute over a socalled dreamer from california who was deported. His lawyers say for no reason. Now its in front of a federal judge who has a history with donald trump that may ring familiar. We get details from our justice correspondent pete williams. Reporter a legal fight with the Trump Administration over the deportation of a man from mexico has landed in the lap of a california federal judge gonzalo culer. Candidate trump said the judge born in indiana hated him. I believe he happens to be spanish, which is fine. Hes hispanic, which is fine. We havent asked for recusal. Kwh evwhich we may do. Now we have a judge who iswhich we may do. Now we have a judge who is hostil which we may do. Now we have a judge who is hostile. He should have been thrown out. Reporter lawyers for a 23yearold man are telling the judge Homeland Security isnt turning over all the records about the case. Juan manuel is a dreamer in the u. S. Since he was 9. One of thousands who came here as children allowed to stay under an obama policy in effect. He was arrested two months ago climbing over the border wall from mexico because dreamers like him lose their status if they come back, he was promptly deported but his lawyers say he was out side the country because two days earlier federal agents improperly deported him after he failed to produce identification. His lawyers filed a lawsuit now before judge curiel accusing the government of with holding records. We dont know exactly what happened because they refused to provide answers up until now. Reporter Homeland Security says it has no records of Border Agents walking him into mexico, only his illegal reentry. Because of his illegal behavior, he lost that status and now he is been removed to his country of origin. Reporter family members say hes in mexico tonight hoping he can come home. Pete williams, nbc news, washington. To the violence in venezuela. Antigovernment protesters clashing in the streets with police as the country teeters on the brink politically and economically and General Motors will Halt Operations in venezuela after the car plant. Nbcs jacob rascon has more. Reporter venezuela is at a breaking point. Thousands taking in the streets yet again today after weeks of violent protest in the capital city. More than 400 arrested, at least seven people killed. Dr. Jorge was on the front lines. People are hungry but for democracy, for liberties, for rights. Reporter this woman now a symbol of defiance facing down a National Guard armored truck. Secretary of state Rex Tillerson voicing concern yesterday. Were concern the government is violating its own constitution. Reporter the venezuela economy has been in free fall for years after oil prices collapsed leading the wide spread shortages of food, water, medicine and other essentials. Protesters blame the president and his socialist government, which seized control of Many Companies over the years, most recently u. S. Owned General Motors that halted production. Thousands from miami an unprecedented crisis in what used to be the envy of latin america. Jacob rascon, nbc news. Still ahead, startling new concerns about diet sodas, so Many Americans drink them believing they are a healthy alternative but a new warning from experts about the potential risk they pose to your brain. I never miss an early but with my back pain i couldnt sleep or get up in time. Then i found aleve pm. The only one to combine a sleep aid plus the 12 hour pain relieving strength of aleve. And now. Im back aleve pm for a better am. So we know how to cover almost alanything. Ything, even a truckcicle. [ice cracking] [second man] ah,ah, ah. Oh no [first man] saves us some drilling. [burke] and we covered it, february fourteenth, twentyfifteen. Talk to farmers. We know a thing or two because weve seen a thing or two. We are farmers. Bumpadum, bumbumbumbum back now with potentially alarming ne significantly increased risk of stroke or dementia. More in tonights keeping you healthy report. Reporter for decades, america had a drinking habit with diet soda. Tracy starts with one. I sometimes go out of my way to work to pick up some of these diet sodas. Reporter whats thought to be a healthy alternative to sugar drinks. I like the taste of diet soda better and probably because its no calories. Reporter but the enthusiasm about the Health Benefits of diet soda has started to go flat. Today a concern about the potential impact of these drinks on the brain. A provocative study links diet soda with a higher risk of stroke and dementia. In fact, researchers found that men and women who drank as little as one diet soda a day were at almost three times the we are seeing an association between artificial sweetened beverages and the risk of stroke and dementia. The risk of stroke seems to be greater. Reporter this study is the first to report a link between diet sodas and dementia and sure to fuel the growing debate over what role these drinks should play in a healthy diet. According to the american beverage association, lowcal sweeteners are proven to be safe but some Health Experts say its time to rethink medical advice to switch to diet soda as a healthier choice. I would say reach for a bottle of water before you reach for your artificial sweetened beverages. Reporter and doctors say more research is needed to understand why diet soda might cause brain disease. Dr. John torrez, nbc news, new york. Up next, pot of gold, cashing in on the cannabis culture and why today is the unofficial holiday for marijuana enthusiasts. Unofficial holiday f you totanobodys hurt, new car. It comes when your Insurance Company says theyll only pay threequarters of what it takes to replace it. What are you supposed to do . Drive threequarters of a car . Now if you had Liberty Mutual new car replacement™, youd get your whole car back. I guess they dont want you driving around on three wheels. Smart. With Liberty Mutual new car replacement™, well replace the full value of your car. Liberty stands with you™. Liberty mutual insurance. Hey scout, whats with the itchys and scratchys . Its these fleas and ticks. Ow im getting bit like crazy. Got any ideas for me . Well, not all products work the same. Thats why my owner gives me k9 advantix ii. It kills fleas, ticks and mosquitoes. Mosquitoes too . Yep kills all three through contact no biting required. Wish my owner knew about k9 advantix ii. Ow well. 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Back now with high times for forks across the country in states where pot is legal and states where its not and not because its any thursday, for marijuana enthusiasts, its 4 20, a time to celebrate and businesses are taking notice and cashing in. Here is nbcs joe fryer. Reporter its the date now synonymous with cannabis. Hippy hill. I love smoking as i love living. Reporter in denver which was once a protest rally on this day, its a festival with 250 vendors, there was even a grand opening today for the International Church of cannabis. One can find a path to spiritual fulfillment through the use of cannabis. Reporter in 4 20 it was a code for a group of teens that met at 4 20 p. M. To get high. Its no coincidence some chose to target those with a case of muncihes. Marketing Free Products with a wink. Today ben and jerries announced something and its legal in eight states and washington d. C. And pot advocates handed out joints on the capital grounds calling for an end to the federal prohibition to marijuana. Seven were arrested. Reporter despite the jokes, marijuana is Serious Business for police worried about impaired driving. Many departments took to social media with tongue and cheek tweets like this one in minnesota that shows munchies, video games and an officer with a net that says undercover operations are in place. The sign of these changing high times. Joe fryer, nbc news. It was the beginning of the end of an era at sea world today. A baby orca was born at sea world san antonio but it will be the last ever for the a year ago it would stop its controversial practice of breeding orcas in captivity. When we come back, the gift of life, the emotional story how one 11yearold girl touched the lives of so many others. Nal story how one 11yearold girl touched t all finished. Umm. You wouldnt want your painter to quit part way, i think you missed a spot. 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Some reported seizures or sleepwalking with chantix. If you have any of these, stop chantix and call your doctor right away. Tell your doctor about any history of Mental Health problems, which could get worse or of seizures. Dont take chantix if youve had a serious allergic or skin reaction to it. If you have these, stop chantix and call your doctor right away as some can be lifethreatening. Tell your doctor if you have heart or blood vessel problems, or develop new or worse symptoms. Get medical help right away if you have symptoms of a heart attack or stroke. Decrease alcohol use while taking chantix. Use caution driving or operating machinery. Most common side effect is nausea. Thank you chantix. Ask your doctor if chantix is right for you. Finally tonight, it was a finally tonight, it was a tragedy that has become all too common here in chicago. An 11yearold girl whose life was taken way too soon but her legacy moves on for the people that owe her an enormous amount of gratitude. Ron mott has the story. Reporter 11yearold holms was shot and killed in january by a stray bullet sitting in her van with her family. Her heart was golden. She would give you the shirt off her back, if she could. Reporter while shes gone. Her heart beats tonight somewhere. Her organs donated, life to at least five people. She was taken away so soon. She didnt even get to spread all the movovelove that she had. She spread a lot. She had a whole bunch more to spread. Darves, nurse and mom to 8yearold seray who sometimes played with her received one of her kidneys. I can plan my life. It has to be too good to be true. Reporter its real. And im so grateful. Reporter for the First Time Since her transplant. So good to see you. Reporter an emotional embrace with tayayas hot mother. Mother. Ayas mothekyaa. Her mother, a new bond forged by grief. How do you honor this beautiful 11yearold girl . I refuse people to forget who she is and what she stood for. This is a young girl that was already evolved and trail blazing. Darves founded the nonprofit more than your kidneys. Just in a matter of days my whole life turned, and im okay with that. Im okay with that. My baby is living on in you. Reporter the gift of a lifetime from a chicago. And thats going to do it for us on this thursday night. Im lester holt reporting from chicago. Ill see you back in new york tomorrow night. For all of us at nbc news, thank you for watching and good night. announcer theres more to life than the climb. Theres the view. Youve gotta stop and look around a little. Come, shed lifes layers in asheville. Let the child inside you out to play. Remember who you are. Life is for the taking, not for taking it easy. I tried to be a good person, but im hes a jerk. I knew the grunting and growning was going on. I had to navigate a mine field. Despite the allegations, oreilly is being paid tens of millions of dollars as he is being shown t