WICHITA, Kan. (AP) — Wichita police investigating the accidental shooting death of a 3-year-old boy have arrested his mother’s boyfriend on suspicion of criminal possession of a firearm.

The Wichita Eagle  reports investigators identified the child Wednesday as Jahmez Hunt.

Police said Jahmez apparently shot himself in the chest around 5 p.m. Tuesday after climbing onto a kitchen counter, getting on top of the refrigerator and reaching into a cabinet for a handgun.

The boy’s three young siblings were also in the home while the mother and her boyfriend were napping.

The 30-year-old boyfriend was arrested on suspicion of owning the gun despite having two previous criminal convictions. He was being held Wednesday on $5,000 while the investigation continued.

Police say the mother was unaware the gun was in the house.