Two convicted murderers on the run for five days after breaking out of prison in New York may now have fled to Vermont, investigators believe.
David Sweat and Richard Matt cut their way out of prison using power tools.
Police believe the men thought Vermont would be a “cooler” destination with fewer officers on their tail, said the state’s governor, Peter Shumlin.
Vermont officials said the north-eastern US state was working to get the “dangerous men” locked up.
“Follow every lead you have”, said New York Governor Andrew Cuomo, addressing some of the 450 officers involved in the search.
“Follow them as if it’s the lead that’s going to break the case. I am confident we are going to find them, the only question is when.”
The manhunt in northern New York and surrounding areas has now extended to campsites and boat slips in neighbouring Vermont.
Mr Shumlin and Mr Cuomo held a joint press conference outside the maximum security prison from where the man escaped, Clinton Correctional Facility.
“New York was going to be hot. Vermont would be cooler, in terms of law enforcement,” Mr Shumlin said, referring to the unspecified information about the men’s whereabouts.
Police confirmed on Wednesday that they had interviewed “one woman in particular” who may have befriended the inmates and had a role in their escape, but would not go into detail.
That woman “may had had some role in assisting them”, said New York state police superintendent Joseph D’Amico.
An unnamed source told CNN earlier that woman is Joyce Mitchell, who worked at the prison tailor shop.
She had planned to pick up Matt, 48 and Sweat, 34, after they escaped but changed her mind at the last minute.
Ms Mitchell has not been arrested or charged, and her son has said his mother would not have helped the prisoners escape.
Matt was given a jail term of 25 years to life for beating a man to death in 1997.
Sweat was serving a life sentence without parole for the murder of Broome County Sheriff’s Deputy, Kevin Tarsia.