According to the Lexington Herald-Leader, the shooting happened at the family’s home in Cumberland County around 1 p.m. The 2-year-old girl was later pronounced dead at Cumberland County Hospital.
Cumberland County Coroner Gary White identified the girl as Caroline Starks.
He said the children's mother was at home when the shooting occurred, and the gun was a gift the boy received last year.
"It's a Crickett," he said. "It's a little rifle for a kid....The little boy's used to shooting the little gun."
White said the gun was kept in a corner, and the family did not realize a shell had been left in it.