The Wilson County Sheriff's Office said Josephine G. Fanning, 48, was pronounced dead at her home Saturday, The (Nashville) Tennessean reported Monday.
The shooting occurred in a bedroom Wilson County Deputy Daniel Fanning was looking at guns with another relative, the Tennessee Bureau of Investigation said. The 4-year-old and victim walked into the bedroom where a loaded weapon was on the bed, TBI spokeswoman Kristin Helm said. The child picked up the gun and fired, killing Josephine Fanning.
"[It] appears accidental at this time," Helm said.
Helm said there was alcohol at the gathering and Daniel Fanning was off-duty at the time of the shooting, The Tennessean reported.
The gun fired by the 4-year-old relative was Fanning's personal weapon, Helm said.