AMERICAN FORK — A 2-year-old boy was critically injured Saturday night after being run over by a pickup truck.

The boy was riding a skateboard on his stomach on the sidewalk in the area of 700 North and 500 West about 8 p.m., said American Fork police Sgt. Shauna Greening.

A neighbor in a pickup had just pulled into his driveway as the boy was riding the skateboard. Because of other cars parked in the driveway, the driver stopped where his driveway met the sidewalk. The truck rolled backward a little bit as the man put it into park, Greening said.

The boy was behind the truck at that time, and the rear passenger tire rolled over part of his head, she said. The boy, whose name was not released by police, was flown by medical helicopter in critical condition to Primary Children's Medical Center.

Several people witnessed the accident, Greening said.