Two girls were injured after an off-road vehicle carrying several children flipped over in southwestern Ontario.

The O-P-P say a nine-year old New Brunswick girl and a 13-year old girl from the central Huron area were treated in hospital after the incident yesterday in Clinton, northwest of London.

Four other children were also on the vehicle and police say it was being driven a 12-year old girl when it flipped as she turned.

None of the children were wearing helmets or any other safety gear and police say their parents were not aware the kids were on the machine.