Id be talking to you right now. Reporter agent crystal griner was shot in the ankle. A 2006 graduate of marylands hood college, she was a star basketball player, known for her strength and athletic ability. A teammate told us she was very aggressive and was not at all surprised how she responded in a dangerous, highpressure situation. Retired Capitol Police chief kim dine. She is amazing, and shes a hero. She epitomized what being a heros all about. Reporter agent david bailey injured his ankle during the chaotic gun battle. Hes from brazil and graduated from North CarolinaCentral University in 2007. He always talked about becoming a police officer. Reporter friend rachael brooks says he just wanted to help people. As soon as i heard that, the first thing i thought was, that is definitely just like david to do. Reporter there were some other heroes too, scott. Henry cabrera, a special agent with the Capitol Hill Police department, also exchanged gunfire with the shooter, as did some officers with the alexandria, Virginia Police department. At this point its unclear who fired the shots that killed the assailant. Chip reid, thanks. In another important story tonight, amid indications that the president himself is now under investigation. Mr. Trump tweeted this morning, you are witnessing the single greatest witch hunt in american political history, led by some very bad and conflicted people. Jeff pegues is following this. Reporter the president s tweets came after the Washington Post reported that he is now the subject of an obstruction of justice investigation. His response, they made up a phony collusion with the russians story, found zero proof, so now they go for obstruction of justice on the phony story. Nice. Cbs news has learned that special Counsel Robert Mueller will interview director of National Intelligence dan coats and nsa director Admiral Mike Rogers amid reports about whether the president pressured them to tamp down the investigation into allegations of collusion between the Trump Campaign and russia. Do you solemnly swear to tell the truth . Reporter a week ago former fbi director james comey told senators that he believed he was fired by mr. Trump because of the fbis ongoing russia investigation, which comey was leading at the time. Do you believe this will rise to obstruction of justice . I dont know. Thats bob muellers job, to sort that out. Reporter ron hosko, a former assistant director of the fbi, says while obstruction of justice is hard to prove the allegation itself could hurt the president. Dont you have to prove intent . Getting to intent to obstruct or impede is going to be very important. And it could be that they never are able to build that case in a meaningful way. However, damage could be done, political damage could be done during the process. Reporter muellers appointment a month ago to oversee the investigation drew bipartisan praise. The white house even interviewed him to fill the vacant fbi director job on may 16th. But as muellers investigation gained traction, the president s allies began accusing him of trying to undermine the trump presidency. And the president himself has chimed in, tweeting this afternoon, why is it that Hillary Clintons family and dems dealings with russia are not looked at but my nondealings are . A former fbi official says the president s tweets could be used by the special counsel as evidence. Scott, late today cbs news confirmed that Vice President pence has hired a personal lawyer to answer any questions investigators may have for him. Jeff pegues in our washington newsroom. Jeff, thank you. After four days of deliberations jurors in bill cosbys Sexual Assault trial told the judge today they are deadlocked. He told them keep trying. Jericka duncan is at the courthouse in norristown, pennsylvania. Reporter bill cosby remains in a small room inside the courthouse. Early this afternoon jurors told the judge they could not reach a unanimous verdict on any of the three counts against cosby. Cosbys attorney, brian mcmonagle, asked the court for a mistrial but that request was denied. Instead the judge told the sequestered jurors to keep deliberating. Cosbys publicist, andrew wyatt. And this deadlock shows the not guilty that mr. Cosby has been saying the entire time. Reporter the jury has paused deliberations to review evidence a half dozen times. The 79yearold comedian has been accused by nearly 60 women of Sexual Assault over the past several decades. But cosby has denied those accusations. Andrea constands case was the only one that was still eligible to go to trial. Lili bernard says she too was sexually abused by cosby. She got into a heated argument with cosby supporters after the jury announced they were deadlocked. He preyed upon my vulnerabilities and he drugged me and raped me against my will. Reporter cosby has been charged with sexually assaulting Andrea Constand at his pennsylvania home in 2004. Constand testified that cosby drugged and molested her after giving her three blue pills which she says left her paralyzed and unable to move. Cosby says it was consensual. Former prosecutor dennis mcandrews. If the jury comes back and names that theyre deadlocked, then the judge can declare a hung jury and declare a mistrial, which allows a new trial for the defendant. Reporter if the judge declares a mistrial, it will ultimately be up to Andrea Constand whether she wants to go through this process again and testify atanother trial. Scott, today constand posted a video on twitter of herself playing basketball with the words always follow through, implying she is not ready to quit. Jericka duncan, thanks. Coming up, a father says north korea brutalized his son. And later, the death toll rises in a horrific fire. I just saved a bunch of money on my car insurhuh. With geico. I should take a closer look at geico. Geico can help with way more than car insurance. Boats, homes, motorcycles. Even umbrella coverage. This guys gonna wish he brought his umbrella. Fire at will howd you know the guys name is will . Yeah . Its an expression, ya know . Fire at will . You never heard of that . Oh, there goes will bye, will thats not his name take a closer look at geico. Great savings. And a whole lot more. And they happen easily. The other side of this. Is they can be removed. Easily. Spray and washs. Powerful formula. Removes over 100 stains. Spray and wash. Better on over 100 stains. 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Reporter Fred Warmbier walked into the press Conference Wearing the same jacket his son wore during his trial last march. Im so proud of otto, who has been in a pariah regime for the last 18 months, brutalized and terrorized, and hes now home with his family. Reporter the comatose 22yearold College Student was flown back to the United States last tuesday. Fred warmbier described greeting his son for the first time in nearly two years. I knelt down by his side, and i hugged him. And i told him i missed him and i was so glad that he made it home. Reporter north korean officials claim otto fell into a coma after he contracted botulism and took a sleeping pill a day after he was sentenced to 15 years of hard labor. He was convicted for committing a hostile act after allegedly stealing a propaganda poster during a College Group tourist trip last year. Today doctors at the university of Cincinnati Medical Center said he shows no sign of a botulism infection but he did suffer severe brain damage. Lead physician daniel kanter. He has spontaneous eye opening and blinking. However, he shows no signs of understanding language. Reporter kanter says the brain injury was likely caused by a sudden stopping of the heart. This pattern of brain injury, however, is usually seen as a result of cardiopulmonary arrest where the blood supply to the brain is inadequate. Reporter Fred Warmbier says hes still in shock. These things are tough to process. But hes with us. And were trying to make him comfortable, and we want to be a part of his life. Reporter doctors say Otto Warmbiers heart stoppage could have been caused by trauma or drug intoxication. Scott, there are currently three other americans in a north korean prison there. Michele miller, thanks. Coming up, a blimp explodes. Not all Fish Oil Supplements provide the same omega3 power. Megared advanced triple absorption is absorbed three times better. So one softgel has more omega3 power than three standard fish oil pills. Megared advanced triple absorption. In very old habits of using toothpaste people are stuck to clean a denture. But dentures are very different to real teeth. Theyre about 10x softer and may have surface pores where bacteria can grow and multiply. Polident is specifically designed to clean dentures daily. Its unique microclean formula kills 99. 99 of odor causing bacteria and helps dissolve stains. Cleaning in a better way than brushing with toothpaste. Thats why dentists recommend polident. Polident. Cleaner, fresher, brighter every day. So we got our new he washing machine but it took forever turns out it wasnt the machine, it was our detergent. So we switched to tide turbo clean. Now we get way cleaner clothes way faster he turbo clean. 6x the cleaning power in 1 2 the time today police in washington issued arrest warrants for a dozen members of the turkish president s security detail. Theyre accused of attacking protesters outside the Turkish Embassy during president erdogans visit last month. Turkey claims it was selfdefense. All 12 are believed to be back in turkey. Today londons Police Commander said that he hopes the death toll does not reach triple digits in that highrise apartment fire. 17 bodies have been recovered, but it may take weeks to search all 24 stories. In wisconsin today a blimp flying over the u. S. Open Golf Tournament crashed. It deflated in midair and caught fire. The only person on board was the pilot. He was badly burned. We do not know why it deflated. Well be back in a moment. Its time to ask whether the attack on the United States congress yesterday was foreseeable, predictable, and to some degree selfinflicted. Too many leaders and political commentators who set an example for us to follow have led us into an abyss of violent rhetoric which, it should be no surprise, has led to violence. Yesterday was not the first time. In december last year a man with an Assault Rifle stormed into a washingtonarea pizzeria to free child sex slaves whom Hillary Clinton was holding there. Or at least thats what Political Blog sites had said. He fired into a locked door to discover no children in chains. Bernie sanders has called the president the most dangerous in history, and the shooter yesterday was a sanders volunteer. You might think that no sane person would act on political hate speech. And youd be right. The trouble is there are a lot of americans who struggle with mental illness. In february the president tweeted that the news media were the enemy of the american people. Later, at a lunch for reporters, President Trump was asked whether he worried that that language would incite violence. His pause indicated it had never crossed his mind. And then he said, no, that doesnt worry me. As children were taught words will never hurt me, but when you think about it violence almost always begins with words. In twitter world weve come to believe that our first thought is our best thought. Its past time for all of us. President s, politicians, reporters, citizens, all of us, to pause, to think again. And thats the overnight news for this friday. For some of you the news continues. For thers check back with us a little bit later for the morning news and cbs this morning. From the Broadcast Center in new york city, im scott pelley. Announcer this is the cbs overnight news. Welcome to the overnight news. Im tony dokoupil. The special counsel investigating russias interference in the president ial election could now be focusing on President Trump. Specifically whether mr. Trump tried to obstruct justice in the case of his fired National Security adviser michael flynn. Jeff pegues has the latest. Reporter the president s tweets came after the Washington Post reported that he is now the subject of an obstruction of justice investigation. His response, they made up a phony collusion with the russians story, found zero proof. So now they go for obstruction of justice on the phony story. Nice. Cbs news has learned that special Counsel Robert Mueller will interview director of National Intelligence dan coats and nsa director Admiral Mike Rogers amid reports about whether the president pressured them to tamp down the investigation into allegations of collusion between the Trump Campaign and russia. Do you solemnly swear to tell the truth . Reporter a week ago former fbi director james comey told senators he believes he was fired by mr. Trump because of the fbis ongoing russia investigation, which comey was leading at the time. Do you believe this will rise to obstruction of justice . I dont know. Thats bob muellers job to sort that out. Reporter ron hosko, former assistant director of the fbi, says while obstruction is justice is hard to prove the allegation itself could hurt the president. Dont you have to prove intent . Getting to intent to obstruct or impedes going to be very important. And it could be that they never are able to build that case in a meaningful way. However, damage could be done. Political damage could be done during the process. Reporter muellers appointment a month ago to oversee the investigation drew bipartisan praise. The white house even interviewed him to fill the vacant fbi director job on may 16th. But as muellers investigation gained traction, the president s allies began accusing him of trying to undermine the trump presidency. And the president himself has chimed in, tweeting this afternoon, why is it that Hillary Clintons family and dems dealings with russia are not looked at but my nondealings are . Investigators are still trying to piece together the chain of events that led to the ambush of a group of republicans. Theyve recovered the gunmans camera, computer, and cell phone and raided his house. Nancy cordes has the latest. Hes in some trouble. Reporter President Trump issued a sobering update today after visiting House Majority whip Steve Scalise last night. Hes a great fighter, and hes going to be okay, we hope. Reporter scalise underwent his third surgery today. Democrat Cedric Richmond is a close friend and fellow louisianan. Its no secret that the bullet split up and that vital organs are were hit. Reporter another victim, lobbyist matt mika, has been upgraded from Critical Condition to serious. But his family warns matt was shot multiple times in his chest and arm, he requires assistance to breathe and will need additional surgeries. House republicans gathered at the capitol to sign get well cards. Meanwhile, fbi agents continued to comb the scene. An alexandria, virginia ballpark. They are processing a cell phone, a computer and a camera found in the shooters van. The atf has determined that 66yearold James Hodgkinson of illinois purchased his highly lethal rifle and handgun lethally, firing dozens of rounds before he was shot and killed by police. Hodgkinsons Facebook Page was filled with antitrump, antigop messages, leading a few conservatives to blame an increasing intensity of hostility on the left. Reporter new york republican Chris Collins told a local radio host i can only hope that the democrats do tone down the rhetoric. Some people react to things like that. How dare they say such a thing . Reporter Democratic Leader Nancy Pelosi argued shes endured hostile rightwing rhetoric for years. So this sick individual does something despicable, and it was horrible what he did. Hateful. But for them to all of a sudden be sanctimo