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.

Victims of the Owl Bar shooting in Anaconda, Montana, have been identified as Nancy Lauretta Kelley, Daniel Edwin Baillie, David Allen Leach and Tony Wayne Palm

Four people have been killed during a mass shooting at a Montana bar on Friday, Aug. 1, the Montana Division of Criminal Investigation (DCI) announced in a press release. The shooting took place at 10:30 a.m. local time at The Owl Bar in Anaconda, a city of fewer than 10,000 people.