Maryland police agencies are looking for escaped prisoner David M. Watson. Watson, serving time for attempted murder of police officers, escaped custody Friday morning while being transported to a mental evaluation.

Police say they've found “several articles of clothing” in the woods he escaped into. They say they also found his handcuffs and waist chain. It’s unclear if he was wearing leg shackles, WJLA TV reports.

Watson was alleged to have gone on a shooting spree in 2012, targeting police officers' homes on the Eastern Shore of Delaware and Maryland, The News Journal reported.

Watson's friend, Orrin Joudrey, testified against Watson when he was tried in Delaware of attempted murder and Watson received a 106-year prison sentence, the Capitol Gazette reports.

However, when he was tried in Maryland on charges that he had shot at the homes of three Wicomico County law enforcement officers, he was found mentally incompetent to stand trial and was ordered to be committed to the Department of Health and Mental Hygiene, The Daily Times reported.