DALLAS Dallas police are investigating a quadruple shooting just after midnight Saturday outside a McDonald's restaurant on Royal Lane just east of Interstate 35E.

Three young men between the ages of 18 and 21 were each shot in the leg as they stood in the parking lot; a fourth man was hit in the buttocks.

Police spokesman Sgt. Warren Mitchell told WFAA that investigators believe the disturbance was the result of an argument between two people at a nearby nightclub.

No arrests have been made.