Police say a motorcyclist was shot in the chest when a gun he was carrying went off as a hit-and-run car struck the motorcycle he was riding.

A 60-year-old Pennsylvania man was hit by a Chevrolet sedan in the Colorado town of Black Hawk and the rider was thrown to the ground, Police Chief Stephen Cole told ABC 7News. As he was thrown from his bike, a handgun he was carrying fired, shooing him in the chest.

Instead of helping the rider, the driver of the Chevrolet sedan fled the scene.

Police were able to locate the alleged hit-and-run driver and arrested him a short time later north of Black Hawk.

The motorcyclist suffered serious injuries and was rushed by ambulance to a Denver hospital.