This combination made from photos released by the New York State Police shows inmates David Sweat, left, and Richard Matt.

This combination made from photos released by the New York State Police shows inmates David Sweat, left, and Richard Matt.

MALONE, N.Y. (AP) – One of two convicted killers who staged a brazen escape from an upstate New York maximum-security prison and had been hunted for three weeks has been shot and killed.

An official with knowledge of the manhunt says Richard Matt was killed and David Sweat is still on the run. The official wasn’t authorized to talk about the development publicly and spoke to The Associated Press on Friday on the condition of anonymity.

Gov. Andrew Cuomo says Matt and Sweat used power tools to saw through a steel cell wall and several steel steam pipes, bashed a hole through a 2-foot-thick brick wall, squirmed through pipes and escaped early on June 6 from Clinton Correctional Facility in Dannemora, near the Canadian border.