PENN HILLS, Penn. (WHDH) — Police are investigating after a 5-year-old boy was fatally shot by his 6-year-old sibling in Penn Hills, Pennsylvania on Monday, police said.

Officers responding to a reported shooting on Prescott Drive around 5:30 p.m. found a 5-year-old boy suffering from a single gunshot wound, according to the Allegheny County Police Department.

He was transported to an area hospital, where he was pronounced dead.

Detectives discovered evidence that suggests the boy’s 6-year-old sibling had accidentally shot him while handling an unsecured firearm inside a home, police said.

The firearm appeared to be legally owned by a parent who police say is cooperating with the investigation.

An investigation remains ongoing.

(Copyright (c) 2022 Sunbeam Television. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)

Join our Newsletter for the latest news right to your inbox