(CNN)—An 11-year-old St. Louis-area boy left alone at home with his 4-year-old sister staved off several home invasion attempts before finally shooting and killing a 16-year-old intruder, according to police.
At least one neighbor, however, offered a different account of the shooting, telling CNN affiliate KMOV that the boys were arguing on the front porch before the younger child pulled out a gun and shot the teenager. ...