PORTLAND, Ore. (KOIN) — A 13-year old boy in Kelso accidentally shot and killed his friend on Saturday morning, according to the Cowlitz County Sheriff’s Office.

Emergency personnel responded to the scene and were not able to save 13-year old Edgar Vazquez from dying. The family was notified. Authorities said they will not be releasing the shooter’s name.

No adults were home at the time of the shooting.

The shooter was the one who called 911. Vazquez spent the night at the shooter’s house, where the shooting happened.

The sheriff’s office said the shooter was “very distraught” and thought the gun was unloaded. The two boys had been friends for a long time, according to investigators.

The Cowlitz County Sheriff’s Office is hoping to interview the boy and gain more details in an investigation.