A 3-year-old boy died in Florida on Tuesday after police said he shot himself to death with his uncle's gun.

Detectives for the Hillsborough County Sheriff's Office said that 3-year-old Jadarrius Speights had found a 9mm gun in a backpack owned by his 29-year-old uncle, Jeffrey Walker. The two shared a bedroom together and the handgun had apparently been unsecured, according to Bay News 9.

The boy was taken to Florida Hospital just after 7 p.m. and was later pronounced dead.

The Hillsborough County Sheriff's Office charged Walker with culpable negligence for exposing a minor to a firearm. The charge is a third degree felony. He was being held in lieu of a $2,000 bond.

Walker was a concealed carry permit holder and had purchased the weapon from a Tampa Bay area gun shop.

It was not immediately clear if the parents, who were in the apartment at the time of the shooting, knew that Walker had the gun.

Watch this video from WTSP, broadcast May 7, 2013.

Watch this video from WFTS, broadcast May 2, 2013.

[Photo: Hillsborough County Sheriff's Office]