A 48-year-old woman was accidentally shot and killed by a four-year-old boy over the weekend in Lebanon.
The incident occurred Saturday at a home in the 6700 block of S.E. Tater Peeler Road.
The residence is owned by Wilson County Sheriff's Office Deputy Daniel Fanning, who was also at home at the time of the shooting.
According to investigators, the boy is Fanning's nephew.
Authorities said the accidental shooting took place during a family cookout.
Authorities reported that Deputy Fanning was showing a relative a gun which was locked up in a safe in a bedroom.
He removed a pistol to get to a rifle and left it on top of the bed.
The four-year-old boy grabbed the pistol and fired, striking the deputy's wife, Josephine Fanning, once.
She was pronounced dead at the scene.
Family members performed CPR and called 911, but the victim could not be saved.
Those close to the family said the couple had only been married for a few months.
Tennessee Bureau of Investigation spokesperson Kristin Helm told Nashville's News 2 the weapon used in the fatal shooting was not the deputy's service weapon.
In an email to Nashville's News 2, Deputy Fanning said:
"I would like the viewers to know that officers of Wilson County do not make a habit of leaving loaded guns simply lying around. The door to the room the accident happened in stays locked unless we were sleeping or we were in it. This was the only loaded gun in the house other than my duty weapon, which was locked away. This was my off duty weapon that I had set down only seconds before the tragedy. Please keep the children and family of Josie in your prayers."
Deputy Fanning is a School Resource Officer at Sam Houston Elementary in Lebanon.
The TBI is assisting in the ongoing investigation.