The mental health of suspected Montana gunman Michael Paul Brown, 45, declined significantly following the death of his mother, relatives said.

Authorities said Michael Paul Brown used a rifle to kill the female bartender and three men who were patrons of the establishment.

Four people are dead after a shooter opened fire at Anaconda’s Owl Bar at approximately 10:30 a.m. on Aug. 1, 2025, according to a press release from the Montana Department of Justice.