(Salem, OR) -- New details are coming to light regarding the escape of an inmate from the Oregon State Hospital in Salem earlier this month. Officials at the hospital say convicted felon Christopher Pray managed to escape after a staff member left the keys in the ignition of a transport van. Pray was still handcuffed and wearing shackles when he stole the van. He was later found stuck in the mud in a North Portland pond, rescued by firefighters and arrested.