SALT LAKE CITY (AP) — A 9-year-old boy who was stuck submerged underwater at a Utah reservoir for more than 10 minutes remains hospitalized and in critical condition on Monday.

The boy and his two siblings were in their family’s truck when it slid down a boat ramp while they were loading kayaks at Smith and Morehouse Reservoir, a popular recreation spot about 22 miles (35 kilometers) from Park City, Utah.

Summit County Sheriff’s Captain Andrew Wright confirmed three children were in the vehicle that slid in to the reservoir and two were able to escape — one swam to safety, while the other was rescued by her grandfather.