Family members identified the boy who died Thursday evening after the incident in Park City as Carson Dean Cheney of Lehi.
Park City Police Capt. Phil Kirk says an investigator was at the Glenwood Cemetery on Friday morning looking into how and why the headstone fell.
Glenwood Cemetery Association President Bruce Erickson says the private, five-acre cemetery around the corner from a ski resort is open to the public. But he says there was no funeral there Thursday.
Kirk says family members were able to free the boy from under the fallen tombstone before emergency crews arrived, and paramedics tried to save him at the scene. The boy was taken to the nearby Park City Medical Center, where he later died of his injuries.