A manhunt in western Montana extended into Saturday as authorities searched for a suspect they believe fatally shot four people a day earlier at a local bar and who they said remained armed and dangerous.

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.

Authorities urged residents to stay inside and on high alert because they consider Michael Paul Brown armed and dangerous.