Update, Jan. 24, 6 p.m.: Montgomery County police have identified the victim as Dwight Nathaniel Demar, 67, of Chestnut Street in Gaithersburg. Update, 5:15 p.m.: Montgomery County police are investigating the death of a man who was struck and killed by an eastbound Amtrak train Tuesday afternoon in Gaithersburg. About 1:55 p.m., the man was hit … Continue reading Update: Police Identify Pedestrian Killed by Amtrak Train in Gaithersburg