A police helicopter flushed Knapp from a cabin last week at a mountain reservoir in Manti-LaSal National Forest. Detectives had been on his trail for three days and nights, following his tracks and guessing his destination. Deputies copied his silent mode of transportation, snowshoes.
Knapp shot at the police helicopter before he was captured, police said.
Keisel said he planned to file additional charges related to that shooting and a more recent string of cabin burglaries and thefts.
Knapp was arrested April 2 with stolen guns and other property, authorities said. He has a criminal background that would prohibit him from possessing weapons, and the Bureau of Alcohol, Firearms and Explosives has joined the investigation, considering possible federal firearms violations.
Knapp spent his last three nights in a framed log cabin with a commanding view of forest roads leading to Ferron Reservoir, according to authorities.
Eugene Bartholomew, who owns the cabin, spoke of Knapp with something of reverence, even as he said the suspect left his place "a mess" and with a pungent odor. Bartholomew said Knapp drained a bottle of whisky during his stay, and the cabin owner plans to display the empty container on his mantle.
"I'm trying to get his autograph," said Bartholomew, who plans to name his cabin "Mountain Man Retreat." ''I want it on a picture of him for my wall."