A man robbed of a hoverboard Sunday night opened fire on the robber’s getaway vehicle, killing the driver and injuring another man, police say.

Ronald Houston Jr., 18, the who initiated the robbery, has been charged with second-degree murder, robbery and armed criminal action, authorities said. Missouri law says someone committing a felony can be held accountable if anyone is killed in the course of the crime, even if the criminal didn't actually fire the shots.

Authorities say Dominick Chambly, 19, was driving a car along Delmar Boulevard with Houston and three others in the car. Houston spotted a man with a hoverboard and announced his intention to rob the man, according to court documents.

Houston got out of the car and pulled a ski mask over his face, the documents say. Houston, who was armed, took the hoverboard and got back in the car.

The robbery victim had his own gun, though. He chased after the car and fired, hitting Chambly and another man, according to court records. The robbery victim’s identity isn’t known, the documents say. Police said they are still looking for the shooter.