JACKSONVILLE, Fla. - An 8-year-old boy shot and killed his 5-year-old sister, and injured a 4-year-old playmate on Jacksonville's Northside on Saturday, authorities said.An 8-year-old boy accidentally shot and killed his 5-year-old sister while wounding his 4-year-old brother in yet another shooting incident in the US involving children.Amardeep Sada - India's youngest serial killer
Yes, it's hard to believe but Amardeep Sada is the 8 year old serial killer..when asked for reason, he just smiled
There are possible incidents