Michael Paul Brown, 45, is accused of killing a bartender and three patrons at the Owl Bar a week earlier on Aug. 1.

The suspect in a mass shooting that killed a bartender and three patrons at a bar in Montana has been arrested after a week-long manhunt. Michael Brown, a 45-year-old U.S. Army veteran, is accused of fatally shooting four people with a rifle at the Owl Bar in the tight-knit community of Anaconda on August 1.