David Sweat, left, and Richard Matt, right, escaped from a New York prison Saturday morning.

DANNEMORA, N.Y. (AP) — Authorities in New York say they have no idea where two convicted killers are who escaped from a prison upstate last weekend.

Police have even extended their search to nearby Vermont, but they say there’s been no sign of David Sweat and Richard Matt, who used power tools to cut through a steel wall and break through bricks at the Clinton Correctional Facility, about 20 miles from the Canadian border.