Richard Matt, one of two escaped murderers from an upstate New York prison, has been shot and killed by police. Officers involved in a nearly three-week manhunt are pursuing fugitive cop killer David Sweat, a law enforcement source briefed on the investigation told CNN this afternoon.

He reportedly was killed in a remote area of Franklin County, N.Y. not far from two hunting cabins where he and fellow escapee David Sweat had taken refuge, according to Fox News.