CRIME

Police on manhunt for suspect in deadly trooper ambush find pipe bombs with trip wire in woods

  • A U.S. Marshal patrols along Mill Creek near Clarks Road in Barrett Township, Pa., Monday Sept. 29, 2014, as the search for Eric Frein continues since the Blooming Grover trooper shootings Sept 12. Frein is a suspect in an ambush that killed a Pennsylvania State Police officer and critically wounded another. (AP Photo/Scranton Times & Tribune, MIchael J. Mullen)

    A U.S. Marshal patrols along Mill Creek near Clarks Road in Barrett Township, Pa., Monday Sept. 29, 2014, as the search for Eric Frein continues since the Blooming Grover trooper shootings Sept 12. Frein is a suspect in an ambush that killed a Pennsylvania State Police officer and critically wounded another. (AP Photo/Scranton Times & Tribune, MIchael J. Mullen)  (The Associated Press)

  • Lt. Col. George Bivens points to images of the pipe bombs that police say were left by trooper ambush suspect Eric Frein in the Pennsylvania woods, at a news conference in Blooming Grove Pa., Tuesday Sept. 30, 2014.  The bombs were not deployed, but they were fully functional and could have been set off by either a trip wire or a fuse, Bivens said. In background is John Brosnan, assistant special agent in charge of the FBI's Philadelphia office. (AP Photo/Michael Rubinkam)

    Lt. Col. George Bivens points to images of the pipe bombs that police say were left by trooper ambush suspect Eric Frein in the Pennsylvania woods, at a news conference in Blooming Grove Pa., Tuesday Sept. 30, 2014. The bombs were not deployed, but they were fully functional and could have been set off by either a trip wire or a fuse, Bivens said. In background is John Brosnan, assistant special agent in charge of the FBI's Philadelphia office. (AP Photo/Michael Rubinkam)  (The Associated Press)

  • In this undated photo provided by the Pennsylvania State Police, a pipe bomb is shown.  State police searching for Eric Frein, accused of killing a trooper, said Tuesday Sept. 30, 2014, that they found two pipe bombs in the Pennsylvania woods during their manhunt that were capable of causing significant damage. The bombs were not deployed, but they were fully functional and had both trip wires and fuses, Lt. Col. George Bivens said at a news conference in Blooming Grove, Pa.  (AP Photo/Pennsylvania State Police)

    In this undated photo provided by the Pennsylvania State Police, a pipe bomb is shown. State police searching for Eric Frein, accused of killing a trooper, said Tuesday Sept. 30, 2014, that they found two pipe bombs in the Pennsylvania woods during their manhunt that were capable of causing significant damage. The bombs were not deployed, but they were fully functional and had both trip wires and fuses, Lt. Col. George Bivens said at a news conference in Blooming Grove, Pa. (AP Photo/Pennsylvania State Police)  (The Associated Press)

State police searching for a man accused of killing a state trooper say they found two pipe bombs in the Pennsylvania woods during their manhunt.

Lt. Col. George Bivens said Tuesday the pipe bombs were fully functional and could have been set off by either a trip wire or fuse, but appear to be among items that were hastily discarded.

Thirty-one-year-old Eric Frein has been on the run since Sept. 12, accused of killing one state trooper and wounding a second outside their police barracks in Blooming Grove.

Frein is described as a self-taught survivalist with a vendetta against law enforcement. Authorities believe he's hiding in the thick woods near his parents' home in Canadensis.

Police said last week they were treating the search area as if it was booby-trapped. They had also previously said they had evidence Frein had been experimenting with explosives.