The boy, whose age was not specified, was crossing Center Street just before 8 p.m. when he was struck, the Utah County Sheriff’s Office said. He was taken by ambulance to Primary Children’s Hospital in critical condition.

The Utah County Sheriff’s Office said its investigations team was called to the scene to assist with the investigation, and that the driver of the vehicle was cooperating. The initial phase of the investigation indicated that impairment was not a factor, authorities said. The case remains under investigation.