Montana authorities expand manhunt for Michael Paul Brown, 45, accused of killing four people at Owl Bar Friday night, with suspect still at large Monday.

At least four are dead in a shooting happened at about 10:30 a.m. local time at The Owl Bar in Anaconda, according to the Montana Department of Justice. A manhunt is intensifying for the gunman who allegedly killed a bartender and three patrons at a bar in southwestern Montana, authorities said.