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,

Authorities are searching for Michael Paul Brown, the suspect in a deadly shooting at a bar in Anaconda, Montana, that left four people dead.

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, officials say.