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The mother of a 9-year-old girl who accidentally killed her gun instructor while learning to fire an Uzi told sheriff’s deputies that the weapon was “too much for her” daughter and that it hurt the girl’s shoulder, according to a report released Tuesday by the Mohave County Sheriff’s Office.

The girl’s father told a deputy that he, his wife and three children arrived at Last Stop in White Hills, Ariz., around 9:45 a.m. Aug. 25 and took a ride in a monster truck before being brought to the establishment’s Burgers and Bullets shooting range, the report said.

Related: Shooting Range Instructor Fatally Shot by 9-Year-Old Girl Learning to Use Uzi in Arizona

According to the report: The father said he shot the gun first. Then, instructor Charles Vacca began showing the girl how to fire the Uzi. After she fired off “a couple of rounds,” her father said, he suddenly heard several rounds fire and saw her drop the gun. She was holding her shoulder, so the family thought she was injured and crowded around her without realizing Vacca had been hit, he said.

The girl’s mother told a deputy that her daughter said the Mini-Uzi “was too much for her and it hurt her shoulder,” according to the report.

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