A manhunt is intensifying for the gunman who allegedly killed a bartender and three patrons at a bar in southwestern Montana, authorities said. Michael Paul Brown allegedly opened fire around 10:30 a.m. local time Friday at The Owl Bar in Anaconda, a city of about 9,000 people in southwestern Montana, according to the Montana Department of Justice.

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

The search for the suspect continued in the mountains just west of Anaconda, where he is accused of fatally shooting four people, officials said.