An off-road vehicle accident in northeast Minnesota left two boys hospitalized with potentially serious injuries on Sunday.
Authorities say the pair — ages 12 and 6 — were riding a side-by-side UTV on the ice at Boulder Lake in St. Louis County, just north of Duluth, when the vehicle flipped "due to an equipment failure."
The 12-year-old was soon airlifted to St. Luke's Hospital with a broken femur, according to a release from the local sheriff. The younger boy, who had a head laceration, was taken to the hospital via ambulance.
The release says neither boy was "wearing helmets or safety belts at the time of the accident."
"The Sheriff's Office would like to encourage operators to exercise caution when using recreational vehicles on frozen waters as warming temperatures cause ice conditions to deteriorate," authorities said.
The release also includes a warning about off-road vehicle safety, reminding Minnesotans that underage riders must wear DOT-approved helmets and safety belts (if available) any time they're using such vehicles on "public land, water, or right-of-way."