A motorist who shot at other vehicles in the southwest metro and seriously wounded a Metro Mobility passenger has been sentenced to 15 years.

Luke M. Campbell, 28, of Chaska, was sentenced in Scott County District Court after pleading guilty last week to first-degree assault.

A charge of second-degree assault and two weapons-related counts were dismissed.

With credit for time served in jail since his arrest, Campbell will serve at least 12½ years in prison and the balance on supervised release. Campbell’s criminal history in Minnesota includes convictions for drug possession and first-degree robbery.

Campbell shot randomly at motorists numerous times, including a March 2016 incident when he shot at a Metro Mobility bus.

A bullet pierced the moving vehicle early in the afternoon as it headed south on Stagecoach Road near where it passes under Hwy. 169, police said. Matthew D. Munz, 46, of Savage, was hit in his chest and survived.

Police in Shakopee said Campbell has a history of firing his gun while riding his motorcycle and driving his car, and he has been spotted doing so from a Hwy. 169 overpass near Hwy. 13.

A witness told police that Campbell liked to shoot his gun in high-traffic areas because it “relieves stress.”