A manhunt in western Montana extended into Friday night as authorities searched for a suspect they believe fatally shot four people at a local bar hours earlier and who they said remained armed and dangerous.

Michael Paul Brown, 45, fled The Owl Bar in the small 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 on high alert.

Investigators searching for a man they say shot and killed four people at a Montana bar Friday morning have located the vehicle he fled in, but the suspect remains on the loose, officials said.