Authorities have launched a manhunt after a shooting at a Montana bar left four people dead. State investigators said the shooting happened Friday morning at The Owl Bar in Anaconda.

Law enforcement officials engaged in a growing manhunt for the suspect, who lived close to the bar. They warned that he was believed to be armed.

Four people were killed in a shooting at a bar in Anaconda in western Montana, according to the Montana Highway Patrol. The shooting suspect, Michael Paul Brown, is at large and believed to be armed and dangerous, the Anaconda-Deer Lodge County Law Enforcement Center said.