--Original story below--
An 11-year-old boy who was home alone with his sister, 4, shot and killed one of two intruders who broke into the house through the front door, police said.
More trending stories
Officers said the suspects tried to get in twice, unsuccessfully, before pushing through the front door of the North St. Louis County home.
When they did push through, the boy picked up a gun and shot one of them, a 16-year-old who died of his wounds at the scene, police said.
Police said the gun belonged to the boy’s mother, who owned it for protection.
The second intruder fled the scene but was arrested a short time later, police said.
>> Click here to watch the video on mobile