CANADENSIS, Pa. (AP) — The suspect in the deadly ambush at a state police barracks in a remote part of northeastern Pennsylvania remains at large but police appear to have narrowed their search.

Authorities have largely shutdown the heavily wooded community in the Pocono Mountains where he lived with his parents.

On Saturday, law enforcement officers wearing bulletproof vests and armed with rifles continued their hunt for 31-year-old Eric Frein (freen), now on the FBI’s Most Wanted list.

A state police spokeswoman says troopers are exercising extreme caution and are determined to find Frein and bring him to justice.

Authorities have lifted a shelter in place order but are urging residents returning home to use caution and to stay out of the dense, boggy woodlands where the search is underway.

Authorities say Frein used a high-powered rifle to open fire from the woods near a state police barracks on Sept. 12, killing one trooper and wounding another.

Frein is described by authorities as a self-taught survivalist with a grudge against police.

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