Tonight, the takedown. Good evening and its great to have you with us here on a very busy tuesday night. We begin with attorney general Jeff Sessions, on capitol hill, under oath. He said he would defend his honor. Calling any claims he colluded with russian a quote a detestable lie. Abcs senior justice correspondent Pierre Thomas leading us off. Reporter in front of the cameras, and the American People, attorney general Jeff Sessions in the hot seat. Do you solemnly swear . I do. Reporter sessions defiant, saying he recused himself from the russia investigation the very start because he was on the trump campaign. I recused myself from any investigation into the campaign for president but i did not recuse myself from defending my honor against false and scurrilous allegations. Reporter but sessions was repeatedlied press ed about any meetings with the russians, as a member of the trump campaign. In particular, a possible third meeting he never acknowlegdged. When thencandidate donald trump was invited to speak, and the Russian Ambassador was there. If any brief interaction occurred in passing with the Russian Ambassador during that reception, i do not remember it. I have never met with or had any the suggestion that i participated in any collusion that i was aware of any collusion with the russian government to hurt this country, which i have served with honor for 35 years, or to undermine the integrity of our democratic process is an appalling and detestable lie. Pressed further, sessions acknowledged there is video of the ambassador at the event. I recently saw a video of him coming into the room. But you never remember having a meeting with ambassador kislyak. Reporter senators also grilled sessions on interactions between fired fbi director james comey and the president. That meeting in the oval office when the president asked everyone, including the attorney general to leave and kept comey there alone. We were there. I was standing there. I did depart. What thats what i recalled. Reporter sessions was then asked about what Comey Told Congress and the country. That during the oneonone meeting with the president allegedly asked him to go easy on retired general mike flynn i believe it was the next day that he said something, expressed concern about being left alone with the president. But that in and of itself is not problematic. Reporter later sessions signed on to the recommendation that james comey be fired. His reason . How comey handled the Hillary Clinton email investigation. Even though the president said on network tv russian was on his mind when he fired comey. Do you concur with the president he was fired regardless recommendation because of the russia investigation. Senator feinstein, ill let his words speak for themselves. You have no verbal conversation i cant confirm or deny this nature of private conversations that i may have had with the president. Reporter sessions repeatedly proo ticketing any conversations we had with the president. I believe the American People have had it with stonewalling. Im not stonewalling, theres Justice Department policy im protecting the president s constitutional right, by not giving it away before he has a chance has the president asserted executive privilege . In the case of your testimony here today. No. Then what is your basis of your refusal to answer these questions . Reporter and then very bluntly, sessions is asked, did russia interfere with our president ial election . Do you belive the russians interfered with the 2016 election . It appears so. Reporter sessions is then asked about whether he had business meetings im not able to rush this fast. It makes me nervous. He was pressed on which longstanding Justice Department policy he was talked about when he repeatedly said he couldnt share conversations with president. Pierre, republican senator marco rubio asking very bluntly is the president roording conversations. Do you know if the president records conversations in the oval office or anywhere in the white house . I do not. If in fact any president was to record conversations in their official duties in the white house would there be an obligation to preserve those conversations . Probably so. When did we learn those tapes exist, will the ag provide that longstanding policy he cited that protects conversations with the president. David the white house said theyll soon give answers on whether those tapes exist and the attorney general said hell give additional answers about that longstanding policy. Pierre, our thanks to you. While attorney general Jeff Sessions was testifying on capitol hill, President Trump was on a road trip to talk about jobs in this country, following him to wisconsin, this question tonight, is the president now considering firing special prosecutor Robert Mueller who is now overseeing the russia investigation . Heres abcs senior White House Correspondent cecilia vega. Reporter in the white house today, President Trump ignoring the question. Should Robert Mueller be fired . Reporter that after his close friend chris ruddy, a conservative media mogul and abc news contributor, said the president is indeed contemplating firing the man leading the investigation into possible ties between his campaign and russia. I think hes considering perhaps terminating the special counsel. I think hes weighing that option. Reporter but the white house is pushing back, saying ruddy does not speak for the president. House Speaker Paul Ryan jumping to Robert Muellers defense. I think the best thing to do is let Robert Mueller do his job. Reporter President Trump cannot directly fire mueller himself, but he could instruct his Deputy Attorney general Rod Rosenstein to do so. But today, on capitol hill, rosenstein said thats not happening. I appointed him. I stand by that decision. I think it was the right thing to do under the circumstances and im going to defend the integrity of that investigation. Reporter even if theres a direct order from the president. Have you seen any indication of good cause to fire mueller . No, i havent. Cecilia, also breaking news on the effort to repeal and replace obamacare. Congressional sources saying, the president told Senate Republicans the bill passed by the house was quote, mean, according to ap late today. What have you learned from the white house. David, the bill also said that the bill the senate is working on should be more generous. Tonight, david from the white house, no denial but sources telling me they wont comment about rumors, about private conversations they may or may not have happened. Cecilia, the senate version, the president is hoping is quote, more generous. Next to the other major headline at this hour, the american student on his way home right now. After being released from captivity by the north korean. Otto warmbier sentenced. His parents have been begging for his return. Their son was in a coma for more than a year. Heres terry moran. Reporter this afternoon, the medevac plane bringing back otto back, his 17month nightmare in north korea finally over. His release coming after secret talks in oslo between u. S. And north korean officials and the revelation last week that hes in a coma. It all began with this incident. Warmbier allegedly trying to steal a propaganda poster like this one while staying at a hotel. He was quickly arrested. His stunt considered a serious crime in that repressive country. Please, i have made the worst mistake of my life. But, please, you have to save me. Reporter but the north koreans showed no mercy. He was sentenced in 2016 after a trial that lasted 16 hours. To hard labor. Please save my life. Please think of my family. Reporter his parents, after a year of keeping a low profile on the advice of u. S. Officials, went on fox and friends last month. Otto, we love you. Youre an amazing guy. Hang in there, tiger boy, youre coming home. Reporter today, secretary of state rex tyrellson announced his release. At the president s direction the department of state has secured the release of Otto Warmbier from north korea, hes on his way home to be reuniting. Reporter as Dennis Rodman arrived in north korea. Some say Dennis Rodham said he was playing a role in his release, but they denied it. Dennis rodhams visit had nothing to do with this release, meanwhile the plane carrying warmbier is expected to land on u. S. Soil. Hes expected to land in ohio late tonight. His family released a statement today, saying in part, we want the world to know how we and our son have been brutalized by the pariah regime. Terry, thank you. We turn next here at home, the desperate manhunt the inmates getting away in a stolen vehicle they car jacked. Officials now warning theyre armed and dangerous. Heres abcs steve osunsami. Reporter georgia authorities tonight tell us theyre stepping it up. They need to surrender before we find em. I saw two brutally murdered corrections officers. Thats what i saw. I have their blood on my shoes. Reporter police are desperately searching for these two fugitives 43yearold donnie rowe and 24 year old ricky dubose, both are career criminals who were serving hard time, and Police Say One of them is a member of the ghost faced gangsters, a white supremacist prison gang. Theres a deputy on the scene. Im assuming that the shooters have escaped. Reporter the bus ride, where they escaped early this morning was unscheduled, and was moving 33 inmates from one prison to another. Police say the two men broke through a locked barrier in back, and attacked prison transfer sergeants, Christopher Lamonica and curtis billue. They were killed with one of their own guns. Be advised, just been they carjacked a white male in a graygreen honda automobile. Reporter police are looking for this green honda. Late this afternoon, they believe they broke into a home north of here and changed clothes. Next to a chaotic and deadly scene here in new york city, after reports of a Carbon Monoxide leak. The first clue that came in, the woman who collapsed in front of everyone. Abcs gio benitez on the scene tonight. Reporter tonight, a scare in one of new yorks busiest neighborhoods. As Carbon Monoxide in a building just 3 blocks from the World Trade Center began seeping through the floors. Those inside, overcome, escaping outside and laying down on the street trying to catch their breath. In the first floor of the basement people were passed out and people were out on the street at that time. Reporter 32 sickened in all, as authorities rushed in to contain the emergency. This 65yearold building manager with leukemia carried six people on his shoulders up two flights of stairs. I had to back downstairs there was two ladies still downstairs and luckily i was able to bring them upstairs. Reporter it all began at 8 22 am. 911 callers initially believing this package which had been opened near the leak caused people to collapse. But the bomb squad cleared that package. We found a defective boiler down in the basement with some kind of broken pipe that was producing the co. Reporter and david, those 32 people are still recovering tonight, theyre expected to be okay. Officials say Carbon Monoxide levels were so high, they could knock out a person after just two or three breaths. David. Gio benitez with us. Gio, thank you. The heat wave closing schools in the east. More than 30 reported tornadoes in the past 24 hours. Lets get to meteorologist rob marciano tracking it all for us. Rob, good evening. Reporter hi, david, just sizzling here in the northeast. Cool front dropping south stirring up strong storms in new england through the ohio valley. That larger system will prove for an active evening across the plains in nebraska and south dakota. Chicago, st. Louis, kansas city, theyll stay hot through the week. The northeast will cool down. David. All right, were waiting for it. Rob, our thanks to you. Theres still much more ahead on world news tonight this tuesday breaking developments in the texting suicide trial. The young woman who was in high school at the time, accused of urging her boyfriend in a text to take his own life and that Dangerous Police chase on the highway, trying to escape officers in reverse. Police forced to make a big decision about the suspect. Well be right back. Last year, he said he was going to dig a hole to china. At t is working with farmers to improve irrigation techniques. Remote moisture sensors use a Reliable Network to tell them when and where to water. So that farmers like ray can compete in big ways. China. Oh. He got there. Thats the power of and. The ultrafine mist startstoms working instantly to deliver up to 12 hours of ahhhhh get fast relief with vicks sinex. Fleas, ticks and mosquitoes. Got any ideas . Ting you . Not all products work the same. My owner gives me k9 advantix ii. It kills all three through contact. No biting required. 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Brinkman was already a person of interest in the gruesome murders of Suzanne Taylor and her two collegeaged daughters, taylor and kylie pifer. Brinkman and Suzanne Taylor were longtime acquaintance. Police connecting the dots moving in on brinkman, who barricaded himself in this home s. W. A. T. Finally subduing him with a stun gun. Brinkman in that ambulance, in custody. The suspect was actually Facebook Messaging with a local reporter during that standoff. Theyre trying to pinpoint a possible motive here. When we come back breaking developments in the texts suicide trial, that young couple. Also, the major shakeup at uber tonight. Well have news after the break. We all drive, some cats just know how to roll. I use whats already inside me to reach my goals. So i liked when my doctor told me i may reach my blood sugar and a1c goals by activating whats within me with onceweekly trulicity. Trulicity is not insulin. 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