A Michigan State Police trooper who died in the line of duty in 1981 will be remembered with a ceremony in Niles next week. On Saturday, there will be a memorial at the Niles Law Enforcement Complex for Allan Peterson. The 37-year-old trooper died on August 29 of 1981 as a result of exposure to toxic fumes while responding to a train derailment in Bridgman on August 7. He had a massive heart attack caused by a prolonged coughing fit which doctors linked to the train incident. Peterson was the 34th state police trooper to die in the line of duty. Next Saturday’s ceremony will be at 3 p.m.