Authorities believe 45-year-old Michael Paul Brown killed four people on Friday morning at The Owl Bar in Anaconda, Montana.

Police on Sunday continued their search for the former soldier suspected of fatally shooting four people at a Montana bar late last week. Michael Paul Brown, 45, fled from The Owl Bar in Anaconda, Montana,

Police say the suspect was "a regular" at the bar where he opened fire, and that a bartender and three patrons were among the victims.