State police say two troopers injured in a fall from a tree stand while searching for the fugitive suspected of ambushing a northeastern Pennsylvania barracks were treated and released after they were flown to a hospital.

Police say the troopers from the Harrisburg barracks entered the wooden hunting blind attached to a tree about 20 feet off the ground to make sure the structure was unoccupied.

Trooper Thomas Kelly says the floor collapsed and both men fell to the ground. They were treated and then flown to Lehigh Valley Medical Center, where they were treated and released.

Hundreds of law enforcement officers have been searching since Sept. 12 for 31-year-old Eric Frein following the shooting that killed one trooper and injured another outside the Blooming Grove barracks.