Jakob Steven Lundberg stands accused of fatally shooting Sidney Callaghan outside the Rocking R Bar in downtown Bozeman, Montana, on May 25.
Lundberg was charged in the Gallatin County Justice Court and faces bail of $1.5 million.
According to reports, Callaghan and Lundberg had been fighting inside the bar and were escorted out by bar staff where they continued to fight.
Lundberg fired at Callaghan when he was surrounded by multiple people on the sidewalk and inside the bar.
Callaghan was reportedly moved to the Bozeman Health Deaconess Hospital, where he was declared dead.
Lundberg was apprehended in his vehicle at on North 7th Ave. near Walmart and is being held in the Gallatin County Detention Facility.
He is charged with deliberate homicide, apart from criminal endangerment and tampering with evidence.
