A nine-year-old boy died in Southern Alberta after an all-terrain vehicle rollover.

RCMP in Picture Butte, north of Lethbridge, were called to the Iron Springs area at about 7:50 p.m. on Sunday.

"Police were advised that the passenger of the vehicle, a nine-year-old boy, was not breathing and CPR was being conducted. Police were also informed that Stars Air Ambulance was en route to Lethbridge," local RCMP said in a press release.

The boy, who police haven’t named, wasn't wearing a helmet. He was pronounced dead at the hospital.