A teenager is accused of a deadly triple shooting at a DeKalb County gas station Monday, authorities said.

Kristopher Brown, 18, of Decatur, was arrested Tuesday and charged with murder and two counts of aggravated assault, according to jail records.

He’s accused of shooting and killing a man at a Shell station at 2345 Wesley Chapel Road in unincorporated Decatur around 8 p.m., police said. He also allegedly shot two other people during the incident, who are both stable at a local hospital.

RELATED: Man dies in triple shooting at DeKalb gas station

Officers responded to the gas station at 8:15 p.m., and they found the dead man’s body lying near a gas pump with a gunshot wound to his head, according to a DeKalb police incident report.

Another victim was inside the convenience store with a gunshot wound to his leg, the report said. He told officers he was walking into the store when he heard “what he thought was firecrackers,” but it was actually gunfire.

A third victim was found in a nearby McDonald’s. None of the shooting victims’ names have been released.

Surveillance video showed a man standing near the store entrance, who was later identified as Brown by police. The man at the pump was seen making an “unknown gesture at the suspect” before trying to run away and being gunned down, the report said.

Brown remains in jail without bond, records show.

The incident came about 90 minutes after another shooting in DeKalb, where a man was killed at a convenience store off North Hairston Road. Police do not believe the shootings are connected.

MORE: Man shot, killed at DeKalb convenience store

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