The search for two killers has landed in New York's southern tier near the Pennsylvania border, about 350 miles from the prison where they escaped two weeks ago.
New York State Police spokesman Beau Duffy said officers were investigating a possible sighting of the escaped prisoners near the border after someone spotted two men near a railway line in the town of Friendship.
David Sweat and Richard Matt escaped on June 6 from the Clinton Correctional Facility in Dannemora, near the Canadian border. The two broke out of the maximum-security prison using power tools and leaving behind dummies under covers in their adjoining cells.
A door-to-door search involving up to 800 officers has been under way since then, concentrated in a several-mile radius of woods and fields around the prison.
Sweat, 35, was serving a life sentence without parole for killing a sheriff's deputy and Matt, 48, was given 25 years to life for the 1997 kidnap, torture and hacksaw dismemberment of his former boss.
Prison worker Joyce Mitchell remains in custody accused of helping the men escape by providing them with hacksaw blades, chisels and other tools. She has pleaded not guilty.