SOUTH HUTCHINSON, Kan. (AP) — The 3-year-old son of a sheriff’s deputy has died from a self-inflicted gunshot after he found a loaded handgun.

Reno County Sheriff Randy Henderson said in a news release that Kaden Nagel died early Friday. The boy is the son of Reno County Sheriff’s Deputy Andrew Nagel.

Henderson says the boy found a loaded Glock handgun in the apartment his father shares with a friend. He says Andrew Nagel was in another room and heard a gunshot. He ran to his son and found him with a gunshot wound.

The boy was pronounced dead at the scene.

The Kansas Bureau of Investigation is leading the investigation into the boy’s death.