law enforcement officials telling, thn richard matt was killed after he killed a driver. that -- shot a driver. that driver called 9 -1-1. a local resident capturing this video of police heading to the scene. now, at this moment as i'm speaking the other killer david sweat is on the loose. they're on a desperate effort to find him. law enforcement officials tell us they don't 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 that's 21 days ago. as you can see the distance on the map, about 40 miles per hour. we have people on the ground