After seven weeks on the run, Eric Frein, accused of shooting to death a state trooper and wounding another in an ambush attack on Sept. 12 at the Blooming Grove barracks in Pike County,

surrendered to U.S. marshals at 6 p.m. Thursday in an open field near an abandoned airplane hangar in Pocono Township.

He was handcuffed with cuffs belonging to Cpl. Bryon Dickson, the trooper he is said to have shot, and placed in Dickson's cruiser for the trip to the Blooming Grove barracks to be processed.

Arrangements for Frein's arraignment had yet to be finalized as of late Thursday night.

He'll be arraigned before a Pike County district judge on charges of first-degree murder, criminal attempt of first-degree murder, homicide of a law enforcement officer, criminal attempt to commit homicide of law enforcement officers, assault of a law enforcement officer, discharge of a firearm into an occupied building, possessing instruments of mass destruction, and recklessly endangering another person.

Pike County District Attorney Ray Tonkin said at an 11 p.m. press conference he will seek the death penalty for Frein

"Now is the time to find answers," Tonkin said.

The troopers' families, said state Police Commissioner Frank Noonan, expressed "relief and gratitude" that Frein had been caught.

At about 8:30 p.m. Thursday, Frein, 31, was taken to the Blooming Grove barracks, where at 11:50 p.m. Sept. 12, he is believed to have ambushed Dickson and Trooper Alex Douglass with a .308 rifle, killing Dickson and seriously wounding Douglass.

Douglass hospitalized for 41 days after the shooting.

Gov. Tom Corbett thanked law enforcement, the community and others for their work.

"Tonight, we have made that bigger step that has to be taken down that path to justice," he said.