Updated

Authorities say a 5-year-old girl was apparently accidentally shot and killed at her own birthday party in southern Utah.

Iron County Sheriff Mark Gower says the girl from Arizona was visiting her grandparents in Beryl this week to celebrate her sixth birthday.

On Monday night, the girl and another girl apparently found a rifle in a bedroom. The girl was shot in the torso and died at a hospital in Cedar City.

Gower says it's not clear yet whether the girl shot herself or the other girl was handling the gun.

The girl who died would have turned 6 on Tuesday.

The gun is registered to the victim's grandparents. The girl's name was not immediately released.