Throughout date are graphic and disturbing. [ gunfire ] stay down. Down, down, down. The numbers, theyre just simply shocking. At least 50 people are dead and more than 400 people injured after a gunman on the 32nd floor of the mandalay bay casino opened fire on the strip below where thousands and thousands of people were enjoying something so quintessentially american, an outdoor music festival. Police say the gunman, a 64yearold man from mesquite, nevada, killed himself as officers stormed his hotel room. Witnesses say the shooting lasted around 15 minutes. You can imagine it felt like hours and years to those having to endure it. Heres one person describing the ordeal. Pop, pop, pop, pop, pop, pop, pop. So loud. Like super loud. And then the next thing you know, the sound is completely off for the musicians and all you hear is like this heavy machine gun just going off and you just hear people screaming. And so we like were just like so confused. We thought this was some technical difficulty. Now its something more. Someone yelled a gun. And people are screaming. Were exiting off stage. And were going around the stage towards the right and people are just like climbing all over the fences trying to get out. And people are just screaming again and then you just hear pop, pop, pop, pop, pop, pop, pop, pop, pop. It was like i mean it sounded like 50 plus rounds were just going off. And people for like the left and right of us are like down on the pavement like we made it so like we went towards like the parking lot and we we were able to like hide behind this cop car. I remember just getting around this cop car and just hearing bullets just whizzing and just like bouncing like oh, like on the ground nearby. These girls were like just screaming and crying and they were just like covered in blood. One thing we dont know yet, is why. What could, whatever would motivate someone to do Something Like this . At this point Authorities Say they have not found a link between the shooter and terrorism overseas or theyre not calling it domestic terror at this point. His home in mesquite, about 80 miles away, is being searched for any clues and you can be sure they will be searching it for quite some time. Police said he had a citation in his past that was handled by the court system, but really, not a long history with runins with Law Enforcement. Whatever the motive, it is no consolation that the loved ones of those People Killed or the survivors who are sitting in hospital beds right now trying to recover from gunshot wounds. Moments ago President Trump spoke to the nation about this national tragedy. Listen to this. Thank you. My fellow americans, we are joined together today in sadness, shock, and grief. Last night a gunman opened fire on a large crowd at a Country Music concert in las vegas, nevada. He brutally murdered more than 50 people and wounded hundreds more. It was an act of pure evil. The fbi the president also added he will be heading to las vegas on wednesday to meet with Law Enforcement, First Responders, and the families of those impacted, so many families impacted, thousands and thousands were in the crowd there. Over the next hour we will have many of their stories coming from witnesses to from witnesses to survivors of this massacre and from investigators trying to figure out how and why this horrific act ever happened. Lets go right now, though, to cnns jean casarez in las vegas at the scene of the shooting. Jean, you have been up all night. You saw the ambulances coming and going as this played out in real time. What are you seeing there . Thats right. And right now, it is crime processing time. As you just said, Law Enforcement and the fbi, they are not classifying this mass casualty event because they want to know the intent of the shooter, why did he do what he did and so search warrants are being executed at this moment. Behind me at the mandalay bay, at the room on the 32nd floor where Law Enforcement says he had ten rifles, we have also heard in excess of ten rifles, also a search warrant executed at his home to try to find out the motive. This is what we do know. We do know that across the street, across the las vegas boulevard, across the strip, where he apparently intended to shoot, was a crowd of 22,000 Country Music fans that were listening to jason aldean, one of the largest Country Music stars. We know there was a lot of Law Enforcement that were off duty. We know the Los Angeles Sheriffs Department had at least two people there, the Los Angeles Fire Department had at least seven people there. Some of their members were shot. We know a los angeles a Las Vegas Police officer off duty was shot in that audience. Another one was also transported to the hospital. So we know that it was a crowd of specific types of people listening to that music, but it all started at 10 08 last night. The weather was warm. Its las vegas. Its cold today. It was warm last night. The strip was buzzing. It was lots of people on a sunday night. And it was the 32nd floor, all of a sudden, people started hearing those shots. And the missing link, as the president said, very quickly, Law Enforcement made it to the 32nd floor, it was s. W. A. T. S. W. A. T. Breached the room. They went in. Very close in time to when those shots rang out. How did they know it was the 32nd floor . We may learn that as facts come out but they did. The shooter, they believed had shot himself before they came in, but it was very close in time. But the fact is, that 406 people have been taken to area hospitals through the night. I would see the ambulances come in and then they would leave, one by one, and i would be able to see because the lights were on inside the ambulance and i would see the emergency medical responders treating each and every person that they were taking out to the Trauma Centers here in las vegas. This city was paralyzed through the night. Interstate 15, which is the gateway from los angeles to las vegas, up to salt lake city, it was closed. The airport, two dozen flights were diverted. Over to my left is the a runway. Its all very close together and the strip is the place to be in las vegas and thats where everyone was and so many victims injured and even perished last night. And a large section of it right now, a massive crime scene now. Jean, thank you so much. Well be coming back to you throughout the show. The shooting started as jean was mentioning while Country Music star jason aldean performing on stage for 292,000 fans. He was closing out the festival, the big headliner and finishing his set. People in the audience ran or dove for cover against to get behind anything as they were still simply trying to figure out what was happening. Get down. Get down. Gunshots. [ gunfire ] [ bleep ]. [ inaudible ]. What is it . I dont know. Stay on top i know. I have to stay on top of you. [ inaudible ]. Were going to get trampled if we dont go. Get trampled if we dont go. Lets go. Were going to get trampled. It is hard to wrap your mind around thinking that is rally but it is. My next guest shot that video, Vincent Sager standing near the stage when the shooting began and had the presence of mind to take that video. Vincent is on the phone. Can you hear me right now, vincent . Yes, i can hear you. Thank you so much for getting on the phone. I can only imagine what hearing that again is like for you and we see and hear a little bit of what you saw and heard. Can you walk us through . That made my hair stand back up on my arms just hearing it. I mean, as she was saying earlier, jason aldean was in the middle of set just getting going and we were stage right in the front, closest to the las vegas boulevard, and, you know, you start you hear first a couple shots and your mind thinks you dont know what that is, maybe its this is vegas. Pyrotechnics, aldean, fireworks, and then the rattling you heard in the video first. And youre thinking okay, now its a malfunction. Youre not getting it. Then what made you click, put that mind in everybody to something is not right is when jason aldean stopped. He ran. And then Somebody Just started running saying oh, my gosh, hes shot, hes shot. People in front of us that were getting shot and you were seeing, as you were hearing, the shots going off, you were hearing just them hit the ground and you were running. You dont know whats going on. We were right there on las vegas boulevard. Theres that wall. You dont know thats the thing youre hearing everyone saying no one did not know he was up there. We didnt know where the shooter was. He could have been on the ground. We were hearing on the ground. I was waiting for someone to jump over the wall and start shooting. And so we, you know, started exiting because the main exit to exit the festival was unfortunately right in front of mandalay bay. People exited out of the front, you were exiting right in front of harms way. Now you have 22,000 people trying to keep calm and, you know, [ inaudible ] individuals trying to keep everybody calm to exit out but the panic is real and you have people running. A guy in front of us who got shot in his back and still running. And were trying to stay calm. As soon as you get to one area, somebody screams. At this point theres other people playing like that telephone game where theres a shooter over here now and you dont know. Youre running and running one way and people are running towards you. You dont know where to go. People were scared and confused and it was terrifying. I didnt believe you dont believe you are a part of now whats going down as the largest massive shooting on our grounds. You dont think you would be a part of it. And when youre there, like i wanted to its hard to say you werent scared because you have adrenaline going through you, everything is settling, i made it home and laying here with my dog im more scared now than gunshots at my feet. Thats what i was going to ask. First and foremost adrenaline and pure survival instinct. Now its like that adrenaline. If a son is under a car you can lift the car up. You have that instinct to start getting people out. Now as the sun comes up and youre seeing seeing and hearing all of the stories and thinking back to it, can you make any sense of what you just lived through . I cant. I cant at all. I mean, as a fan of Country Music and just like how you guys said, your mind is thinking like e okay, is this a terrorist attack going on and youre thinking, oh, my gosh, this might be, you know, unfortunately whatever a terrorist attack and then think this is a country festival and the president and everything going on, people who voted for trump are not going to say this, but probably Country Music fans. Attack on the country and your mind my mind is just going a mile a minute thinking everything. Then you hear okay theres a bomb. Youre hearing everybody saying different things. Of course were all proven there was no bombs or extra shooters. At this point you dont know this. Youre getting messages and what not and different information from people. At this point you dont know whats going on. Youre just and youre trapped. We were literally just trapped. We couldnt go anywhere. It was an ambush. It was it was an ambush at an open air festival in the middle of las vegas. When you mentioned the president , he spoke just a short time ago, i dont know if you had a chance to hear it yeah, i was listening. Did his words bring you any comfort . I mean, its i mean its heartfelt. You really cant you cant really express how he did or how to express Something Like this the way no better than he did. He did it very well. And the fact that he said, you know, vegas is almost you can say a second, third home to him, his name is on a building here, for him he knows the effect. For him to come here right away, its what you want to see the actions done. So i definitely i give him credit for what he for what he said and how he handled it. Now its a matter of us, what are we going to do . Yeah so many questions. Investigation just getting started. But most importantly, at least were speaking to you and you are okay, at least physically. Vincent, thank you so much for coming on. Im so sorry you had to live through Something Like this. I appreciate it. Thank you. Like i said more prayers and thoughts goes out to everyone who unfortunately was not able to make it out safe. But i mean metro, las vegas metro, the whole entire staff and route 91 and harvest fest the way they handled everything was topnotch professionalism. Even the staff of route 91, wasnt employees, come work at the event and heres a couple hundred bucks. Route 91 and metro they deserve all the credit for how they acted. Vincent, thank you so much. All right. So police say they believe the shooter acted alone. Hes been identified as a 64yearold white man who lives in mesquite, nevada. Authorities say there are no links to International Terror groups but they dont yet know, of course, the motive for the massacre. The why, the how in gods name why, would someone do this. The shooters brother lives in orlando and spoke to reporters there about the shock at hearing the news. He was my brother. Yeah. Its like an asteroid fell out of the sky. We have no he hasnt you know, dont know how to go through now its last time i talked to him was he texted me to ask how my mom was after we didnt have power for five days in the neighborhood. He had no machine guns when i moved him from melbourne to mesquite. Find out who gave him who he bought the machine guns from. Once again its theres no blame and, you know, its just he bought the machine guns and he did this. I mean even his own brother at a loss for words how this all happened. Investigators executed a search warrant at the shooters home in mesquite a short time ago. Mesquite police briefed reporters about the investigation. Cnn was there for the briefing and joining me now, whats the latest there . Well the police here tell us the Mesquite Police department telling us that the search warrant has been executed, that he are very slowly and methodically going through this house. When they initially approached this house, kate, in the Early Morning hours, there was concern what they might find given the amount of carnage and violence in vegas. What they did was evacuated the immediate neighbors around the house. They used a robot to gain entry. But then what they found was a very normal ordinary house. And it has simply added to the confusion by the Police Department. Heres what we heard from the Public Information officer, the Mesquite Police department. Whats unique for us is that the gunman, the shooter, and the person with him, we, the Mesquite Police department, have not had any contacts with these people in the past. We havent had any traffic stops, any Law Enforcement contacts, no arrests or nothing. Reporter he did add that they did find some ammunition in the home, but other than that they didnt really find anything out of the ordinary and in talking to some of the people who live here, they also say, this is about the last place that they would expect someone to do this, especially given the profile of this man. 64 years old, living in a 55 plus retirement community, almost zero crime here. There appears to be nothing wrong here in this planned community if you talk to the people who live here. This is a place where you can drive golf carts down the street, where people walk their dogs. They are having an extraordinarily difficult time trying to reconcile this place with the 64yearold man checking into the mandalay bay, going to the 32nd floor, days ahead of time, and then planning Something Like this. Shooting the windows out of a hotel room. For them, this is something that is absolutely unthinkable, given the profile of this man. So what they are hoping to learn, kate, they are hoping to figure out exactly what would this sort of a man to do this. Kate . Absolutely right. Thank you so much. Kyung in mesquite. We will get back there as more news comes. Press conferences could pop up throughout the hour. We will bring you the information and those moments live, bring you the most updated information as they pop up. Cedric alexander, a former police chief of rochester, new york, jonathan is a cnn Law Enforcement analyst and former secret Service Agent under president obama, david cats, former dea special agent, former firearms instructor at the fbi Training Academy and tom verneny former detective for the new york Police Department. Thank you so much for being here. I really appreciate it. David, the question of why is what lingers now. The death toll can still rise. The number of injured could still rise. We are still in the hours, even though its moving closer to 12 hours since this horrific incident, but why is lingering around all of this. We dont know why. How does Law Enforcement get closer to figuring out the why . The usual thing, theyre going to go into is take his computer, his blackberry, cell phone, smartphone, whatever he has, and going to look anything hes done on social media, any any emails, spoke to people who know him well. Apparently his neighbors think hes a quiet, regular guy. He will have contact with other people who know him to a greater extent. Maybe political contacts, the woman hes involved with does. At this point theyre not saying anything, but there clearly is a motive and it probably isnt he doesnt like Country Music. Thats absolutely right. You have to assume, jonathan, this was planned well in advance. You have to assume that, correct me if im wrong, you have to assume he would request a hote