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.

A massive manhunt is underway in western Montana for Michael Paul Brown, 45, who allegedly killed four people at The Owl Bar in Anaconda on Friday morning. Brown, a military veteran, fled the scene in a white pickup truck but later abandoned the vehicle.

Michael Paul Brown, 45, fled The Owl Bar in the small town of Anaconda in a white pickup truck but ditched it at some point, officials said.