Suburban Detroit authorities say a power boat collided with three children being pulled in a tube on a lake, killing one of them and seriously injuring two others.
The accident happened Sunday afternoon on Sylvan Lake in the Oakland County community of Keego Harbor.
Authorities say a man was pulling his three children when another boat hit their inner tube.
Authorities say the three were taken to hospitals. They say an 11-year-old boy died and his sisters ages 6 and 10 were seriously injured.
Keego Harbor police and the sheriff's department are investigating.