CARIBOU, Maine (AP) Game wardens in Maine are calling for a renewed focus on safety in the wake of several all-terrain vehicle crashes involving children.

The wardens say they responded to a crash in Caribou on the Fourth of July that injured two 14-year-old boys and a 4-year-old boy. They say none of the boys involved in the crash were wearing helmets, but they were wearing seatbelts.

Wardens say another holiday crash resulted in injuries to a Connecticut man in Frenchtown Township. Still another crash, in Burnham on Thursday, resulted in injuries to a 15-year-old and a 25-year-old.

Wardens tell WMTW-TV that yet more incidents were reported on Thursday. They’re calling for ATV users to wear protected headgear and operate the vehicles at safe speeds.