Video of police heading to the scene. Now, at this moment as im speaking the other killer david sweat is on the loose. Theyre on a desperate effort to find him. Law enforcement officials tell us they dont have eyes on him. Officials say the escaped killers may have been on their way to canada. Yesterday they found evidence in the town of malone. It was near there that matt was killed tonight. The two men escaped from a maximum security prison in new york thats 21 days ago. As you can see the distance on the map, about 40 miles per hour. We have people on the ground where this is going on. We have the latest of sweat and the search. I want to start with minute by minute we are awaiting whether they possibly find him. What happens to david sweat in what do you know about the hunt for him at this moment . Reporter well erin that critical moment right now unfolding not far from where im standing along route 30. You can see the barricade thats been set up. You need a police badge to get past that. Much of this is unfolding 30 miles or so from where were standing and even hours after the shots were fired, so many people here are on edge. Many people here while there is a sense of relief that at least half of the threat is gone theres still a lot of uncertainty right now being that authorities dont have eyes on the remaining funltive that is likely still on the run, david sweat. As for resources, i can tell you from our vantage point, we have seen seemingly an endless parade of patrol cars speeding right past us heading to the heart of the action. At this moment weve seen that subside quite a bit but it doesnt mean there arent anymore resources on the way. I did notice there are dozens of flood lights being brought in. This is far from over. Authorities here for the long run as they expect this potential man hunt to extend into tonight as well. Thats a crucial detail. Everyone this search has got an lot harder at night. Theyre bringing in flood lights indicating they are ready to get david sweat if they can find him. Alexander field is where richard matt was shot. They had reason to believe the two men were together. What do you know about how this went down . Reporter we know richard matt is dead three weeks after he tunnelled his way to freedom and it was no mistake that authorities were able to close in on him in Franklin County where they moved 1100 Law Enforcement officers in place to pursue both of the men following a few credible leads. Heres the time line of what went down this afternoon. We know about 1 30 there were reports of shots fired. A half an hour later, another report of shots fired. That official round of shots was called in by a man driving an rv. He later called police a second time when he discovered his camper had been struck by a bullet hole. At that point police did a sweep 069 of the area. Thats when they closed in on richard naught. He approached with a rifle. It was a Tactical Team that took him down. The police have been from focusing in this area. They discovered yesterday a cabin somewhere in the town of malone where there were signs of a burglary. They went in and collected pieces of evidence and deemed that evidence to be conclusive of the fact that they had been there. This morning, another development in the case. They found more items which they believed belonged to the two fugitives. They were here. They were ready to respond whenever that next break would surface. Today they got it with that first round of shots fired. All right. Alexander field, thank you very much. Well be going back to alex polo has the situation develops. I want to bring in this Clinton County sheriff. The bottom line question i know you heard the reporter talking about the flood lights. How confident are you he will be found tonight . Weve hoping for the best but were preparing for whatever it will take to bring the individual in. Were bringing in additional resources, everything we have available through our department and surrounding departments including additional infrared trucks flood lights. Were ready to go through the night and bring this thing to a close. And sheriff, were reporting that after richard matt was shot searchers found a second foot of footprints that they thought blorchged to david sweat. They may have even heerd him running away as in he was that close. Now, this obviously richard matt was shot and killed earlier this evening. Weve had two hours. However could david sweat be right now or are you confident that area is cordoned off . Theres over 1100 Law Enforcement personnel up in that immediate vicinity and they responded very quickly to be able to close that off. This is definitely the hardest perimeter that ive seen around any area since the man hunt started 21 days ago. Do you think david sweat is armed . The reason he was in the facility was because he shot a Sheriffs Department 22 times. Thats correct. Do you think hes armed, sir . Well have good reason to believe that theres a possibility that hes armed. Weve obviously seen that his partner was armed so were approaching him as if he is armed. Obviously we know hes extremely dangerous and were going to take whatever steps necessary to bring him in. And were reporting richard matt was armed. He shot at an rv driver in an attempted carjacking before he was shot and killed by Law Enforcement. What do you know about the weapons that he had . I didnt get to see the weapon that he had with him. Im sure theyve taken that weapon in as evidence but i couldnt tell you exactly right now what it is. Its been mentioned several times with all the sportsmen camps up there theres probably weapons and hunting knives and compasses, many items that you would need to be able to survive in the wilderness and to be able to put up a battle if needed. Now, matt was caught because the rv driver called 911. He noteiced bullet holes and called 911. Law enforcement responded and shot and killed richard matt. Would you have caught Richmond Matt without that call . Ive said since day one that this case is going to be closed with the eyes and ears of the people in the community. This is proof of that. Without the quick reproach to get that investigation to 911, immediately. The timeliness was critical we may not have been able to get this type of a break thats gotten us to this point right now. Sheriff, before you go. I want to ask, there are some reports completely unconfirmed, that david sweat, there may to be a shootout incident that went down. Are you aware or to your knowledge, is he still on the run . I just spoke to some of my guys and theyre not aware of any shots. Theyre probably refer organization its late news getting out from the shots that were fired two hours ago by now. I appreciate you taking the time and being with us. I know obviously, this is an incredibly important night for you. We wish you the best of course in these next few moments and hours as the search continues for david sweat. Thank you, sheriff. We have a retired u. S. Marshal. You are the one who told us the first to say richard matt was shot. That was before anyone else found out. What are your sources telling you right now . Well theres a couple things. Obviously, that matt was armed, which i think we knew based on what had happened probably a week ago when they had broken into that original cabin, and i think that is a key part. I mean we gave these guys way too much credit in the beginning when we started saying oh they must have plan b, plan c. Obviously, they had plan a and theyve been on foot the whole time. So i think what youve got now is theyre getting desperate. Theyve been three weeks on the run. They probably have been sleeping due to exhaustion, and theyre not eating correctly. Theyre probably sick and the key to this thing was finding this cabin yesterday. And are you hearing any details when you talk about them being sick about Richard Matts physical condition when they found him . Anything that might give some clues as to how theyve been hiding but also what condition david sweat whos on the run at this moment might be in right now . I havent heard anything specific but when youve been on the run, obviously theres spence pressure on you, number one. Youre not eating correctly. Im sure theyre suffering from dehydration. As we move through this, you know, it could very well be that matt said im not going to be taken alive. Im going to go down in a gunfight and thats what happened. Now, if theyre surrounding sweat at this point, this could be the same scenario in dealing with him is that he might not know that matt is down and now being by himself, he doesnt have that other individual with him to provide the physical and psychological support that hes going to need to stay out there. . All right. Art, youre going to be with us a lot more to talk to you about. This perimeter theyve set up with where they believe david sweat is trying to break out. Right around the area where they shot and killed richard matt. Our breaking News Coverage continues after this. Authorities in hot pursuit of david sweat at this moment. Plus how is david sweat evading more than 1,000 searchers in a survivalist who knows the area of the hunt is up next. You probably know xerox as the company thats all about printing. But did you know we also support hospitals using Electronic Health records for more than 30 million patients . 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Nationwide is on your side breaking news one of the convicted killers whos been on the run for three weeks, dead tonight. Earlier tonight richard matt killed in a shootout. This after an attempted carjacking that went down 12 11 miles from the canadian boarder. David sweat is on the loose. Authorities think the two were on the run together and were together. They have as we were just told by the sheriff on the ground dwrrks the hardest perimeter on the ground hes ever seen. We have someone at the command center. And do police think sweat is in the perimeter and that theyre going to be able to get him in the next few minutes . Reporter i think they do. During the break, we had two new York State Police helicopters leave this area and go up in the skies toward this area where they are pursuing this convicted murder. We just got information from the Clinton CountySheriffs Police department. As they continue to search by air, theyre going to be using the infrared lights. Those are the lights that allow them to look on the ground and see things you would not be able to see through normal eyesight. We also understand they will have a fourdrive vehicle with these fran red lights that will go into the brush and the atv trails to be able to see things that at night the naked eye could not see. And the new York State Police told us earlier today that theyve had experts on this to try to see if they believe the inmates are traveling during the daytime or at night and what they decided was that it is the nighttime that matt and sweat have been moving from area to area. And it was today that the search seemingly changed to a north, northwest area. This morning there was a check point. There had never been and then we heard later on that they fully believed or believe at this point since theres still a man hunt that one or two of them were bound for the canadian border. But it all began on thursday and that is when a cabin in that village of malone area was burglarized. We now know the homeowner came forward saying there was a liquor bottle that was found in his kitchen and thats when they did field tests and we learned today that they found items believed to be dropped in the field by the inmates, and so this afternoon these items have been tested at the new york state crime lab, and, of course, that is an addition gnat aspect of all that important in any prgs but that is what led them to the area and where now it is confirmed richard matt dead and on the pursuit of david sweat. I want to tell you one more thing. Law enforcement sources telling cnn that richard matt had a shotgun in his hand and i spoke with the woman today very Close Friends with the owner of that cabin. Last saturday that they believed a shotgun was missing. She said it was an antique. He knew immediately his shotgun was missing from that cabin and now Law Enforcement saying it was a shotgun that one of those inmates had today that they were using to shoot. All right. Well thank you very much. Jean is going to stay with us. I want to go to pamela brown. Hes been talking to Law Enforcement about the hunt. You just heard jean saying that perhaps richard matt was armed with an antique shotgun. David sweat shot a Sheriffs Department 22 times. Thats how he ended up in jail in the first place. Hes desperate. What do you know about how armed he may be right now . Reporter i know Law Enforcement officials are operated as though he is armed. Thats what theyre assuming right now. The belief among Law Enforcement is that the weapons were stolen from that cabin that we were just talking about. We know that they raided a cabin in the area, stole a lot of items from there. Richard matt was armed with a shotgun when he got into that shootout with authorities earlier today and was shot and killed. The belief is that david sweat is also armed at this moment as we speak, hiding out. We know that theres a hard perimeter around him according to the sheriff there but it is a big concern, because this is a man who was not only a convicted killer but not and killed a Sheriffs Department. He is not afraid to do that. They are proceeding as though he also has weapon stolen from the cab thanin that they were in. Pamela, thank you very much. A lot of reporting there. I want to bring in a mana couple of people. Were trying to wait for updates on the search for david sweat with this perimeter. Air strike erik, you know him. I think his immediate thoughts are hes trying to get as far away or plan an attack because he knows theyre surrounding him and he knows he doesnt want to go back to prison. When pamela is talking about the fact he was in prison because he shot a Sheriffs Department 22 times your idea is hes going down in a gunfight. Hes not going back. This was his one shot out. He took it and now hes not going wacback. Investigators admit they dont have eyes on him. They thought they saw a second set of footprints. They didnt actually see him. Do you think hes there . Im hoping hes there. The fact that these guys are desperate now. Its been 21 days. For matt to go and fire at that vehicle, had to know that he was in his right mind that police would be swarming that area soon. Apparently i think thats happening a last shot. Right. Theyre sick and tired. If sweat was anywhere within a close range of matt when he was shot im sure theyve got him cordoned in now. But if he was able to make it out of there, we might still have another couple days. Im hoping he was close by. Tell me how it would work. They have a shoot out and kill richard matt. A few seconds go by. They hear someone think presume is david sweat running away. They were close but its been two hours. Darkness is coming. The whole thing is once Something Like that happens, your good starts running. Ive been in situations reichlike this. Were close. Im sure a bunch of them ran through the woods hoping to run into him and at the same time calling for help and getting areas cordoned off. How long would it take . It would take a little while. I go to theed a ran daks all the time. If you lose going off the track there, all right, on a trail and you go into the woods, its crazy. It is so thick. Its like a jungle. Thats how tight it is over there. They could be five or ten feet away from him and not see him, and im sure if they saw him, they would be firing shots at time at the same time they were shooting at matt but apparently they did not see him. He could be sitting still and hiding . Thats correct. Weve been hearing possibly their sick. You heard people saying look the rumors about the shootout with sweat, not true at this time to his knowledge but that they could have been sick. Whats the condition they would have been . If they havent had any fresh water for the last couple of days you see they went to a cabin and were drinking liquor. Maybe theyre drunk. Maybe theyre running through the woods crazy. Maybe they dont know the extent of the search perimeter because they havent watched tv. Maybe they didnt know Law Enforcement was so close on him. I think its been too long. I go two or three days when i work a homicide and i didnt get home or two or three days when i was working. Your brain doesnt work right. I think theyre getting to that point now where theyre going to start making a lot of mistakes and i think that sweat will probably be captured soon because hes down to his last do you think it happens before night fall . I hope so. Once it gets dark its very hard. Im surprised, i dont know if the dogs picked up a scent. If the dogs do they should be able to follow the scent to follow where sweat is. Im hoping thats working out for them and hopefully well be able to track them down. This situation is so fluid. We keep waiting to hear and report. Next our breaking News Coverage continues the desperate search for the last fujgitivefugitive. Well take a closeup look of the area. We are counting the minutes until the sunsets tonight, and richard matt dead in the shootout with police. A friend of matt and a former