Investigators searching for a man they say shot and killed four people at a Montana bar Friday morning have located the pickup truck he fled in, but the suspect — believed to be armed and dangerous — remains on the loose,

Michael Paul Brown, 45, fled the Owl Bar in the town of Anaconda in a white pickup truck but ditched it at some point, said Lee Johnson, administrator of the Montana Division of Criminal Investigation, which is overseeing the case. He urged residents late Friday to stay at home and remain on high alert.