Kansas father pleaded guilty to second-degree murder after his 3-year-old daughter fatally shot her 1-year-old sister with an unsecured handgun.
https://www.foxnews.com/us/father-admits-leaving-handgun-within-reach-young-daughters-before-toddler-fatally-shot-baby-sister
https://www.foxnews.com/us/father-admits-leaving-handgun-within-reach-young-daughters-before-toddler-fatally-shot-baby-sister