Boulder County sheriff's officials say a 12-year-old boy competing in a bull-riding event has died after being thrown and then stepped on by a bull.

Authorities say the boy was competing in the Little Britches Rodeo for youth at the Boulder County Fairgrounds when he was injured Sunday.

Sheriff's officials say the boy died at a hospital in Longmont. His name wasn't immediately released.

Sheriff's Sgt. Mike Dimond says there is an inherent risk in bull riding, and the boy's death appears to be a tragic accident.