A motorcyclist was killed early Friday morning in a collision with a Chicago-area commuter train, police said.

The crash occurred just before 1 a.m. in the Chicago suburb of Orland Park, Illinois, when Metra train 841 traveling outbound from Chicago struck the motorcyclist on the tracks.

Police are investigating whether warning signals at the rail crossing were not in operation or if the motorcycle operator, whose name has not been released, drove around the gates despite the flashing warning lights.

Passengers experienced an 80-minute delay before the train resumed its scheduled route.