BRIGHTON, Colo. - A 12-year-old girl died Sunday in an ATV accident near Weld County Road 23 and Road 18.
The girl was riding with her father and grandfather.
She was riding a newly purchased 500cc ATV but was not wearing a helmet, the Weld County Sheriff's Office said.
She suffered a significant head injury and died about an hour after the 5 p.m. crash.
The family was riding on private property that they had been given permission to access, the sheriff's office said.
Weld County Sheriff’s Deputies are continuing to investigate the incident.
The girl has not been identified, but authorities said she and her family are from Brighton.