The Richland Parish sheriff says an off-duty policeman's 3-year-old son apparently shot and killed a 3-year-old cousin with his father's gun.

Sheriff Charles McDonald says the children — a boy and girl — were playing together Thursday when the Rayville police officer went to get something out of his car.

He says the gun was in the driver's side door. The sheriff says the boy picked up the gun and accidentally shot the girl.

McDonald says she died instantly.

He did not release the officer's or the children's names.