Authorities are searching for another state prison inmate who failed to return to the Bangor Pre-Release Center after a work detail.

Lance Morgan Palmer, 31, last was seen Wednesday at a construction site in Norridgewock, according to police. He was supposed to return to the Pre-Release Center later Wednesday, but never showed up.

Palmer and two employees of N.S. Giles Foundation had taken a company pickup truck to a construction project on Elm Street in Norridgewock. When the truck and employees didn’t show up, the owner of the construction company alerted police and asked that if they located the white Ford F-350 pickup truck to have the employees return it, reported Bangor police Sgt. Thomas Reagan.

The truck was returned at 9:15 a.m. Thursday, although the employees told the owner that they had dropped off Palmer at the prison center Wednesday night and returned to the Norridgewock site, Reagan said.

Palmer is described as being 5 feet 11 inches tall and weighing 196 pounds with blond hair, blue eyes and a goatee. He was convicted of criminal threatening with a dangerous weapon, according to police.

Late last month, with less than two weeks to go on his sentence, inmate Stephen Gross, 31, fled a construction site in Veazie after taking a company pickup truck. He was located about two days later in Machias.