BLOOMING GROVE, Pa. (AP) — The survivalist charged in a deadly ambush at a state police barracks 10 days ago will be caught, Gov. Tom Corbett vowed Monday as a police official said authorities believe they are hot on his trail.

Corbett discussed the manhunt for 31-year-old Eric Frein at a news conference in Blooming Grove, near the barracks where Frein is charged with killing one trooper and seriously wounded another 10 days ago.

“I feel confident that we should be able to apprehend this individual. I am very positive about that,” he said.

The governor thanked the hundreds of law enforcement officials who are methodically searching the rural, rugged northeastern Pennsylvania terrain.

“They are putting their life on the line for someone who has the intended purpose of killing police officers,” Corbett said.

Investigators have said the suspect they describe as a self-taught survivalist who hates law enforcement had been planning a confrontation for months, if not years. They believe he is still armed and dangerous and possibly concealing himself in self-built bunkers.

The search area is narrowing, and state police are following up on “very credible tips,” state police Lt. Col. George Bivens said Monday.

“I do believe that we are close to him at this point,” Bivens said at the news conference.

Authorities on Sunday said they found an assault rifle Frein might have been carrying.