Halloween trick or treating is being canceled in a Pennsylvania town where hundreds of heavily-armed police officers in camouflage are searching for the man suspected of ambushing two Pennsylvania state troopers, killing one.

Barrett Township in the state's northeastern woods cited the manhunt for survivalist Eric Frein in deciding to cancel trick or treating and postpone the town’s Oct. 26 Halloween Parade, WGAL-News 8 reported Friday.

The station said police who would normally provide security for the two popular events are consumed with the search now entering its second month.

Barrett Township is planning to replace trick or treating at some point with a “Trunk-or-Treat” event on the grounds of a local school.

Authorities meanwhile says a journal left by Frein provides a "cold-blooded and absolutely chilling account" of the night he allegedly opened fire outside a Pennsylvania State Police barracks,

Frein wrote that he saw his shot and took it, watching from a distance as his victim - who turned out to be Cpl. Bryon Dickson - dropped to the ground. "I was surprised at how quick," he wrote, according to police.

Authorities are analyzing the document but are convinced it was written by him.

"I will tell you, after reading this cold-blooded and absolutely chilling account, I can only describe Eric Frein's actions as pure evil," said Lt. Col. George Bivens at a news conference Wednesday.

Bivens said the journal contains details that only would've been known by the shooter. Notably, police said, the author does not identify the troopers by name, suggesting they were targeted at random.

The Associated Press contributed to this report