A Bronx boy stabbed and chased off a violent home intruder who had attacked him and his mother, law enforcement sources told News 4.

The 11-year-old boy was home with his mother and 4-year-old brother at their Morris Park apartment on Tuesday evening when a man claiming to have to use the bathroom came knocking at the door, source said.

The family didn’t let the man in, so he kicked in the door. The mother grabbed a knife to defend herself, but the man took it away from her, cutting her in the process, sources said.

The man was beating the mother when her son came to her defense, calling 911 to report a “robber in the house” and grabbing another knife, which he used to stab the intruder, who ran from the home, sources said.

On Wednesday, neighbors were thanking the little boy for taking on a full-grown man to save the life of his mother.

"I think it's important that we protect the women and the children of this community," Kim Williams said. "It's unfortunate that an 11-year-old had to do that, but I'm just glad that she wasn't more seriously injured."

The mom suffered a cut to her hand and arm and a bloody lip. The boy had a cut on his arm. His 4-year-old brother was not injured. They were taken to St. Barnabas Hospital.

The alleged burglar, 22-year-old Brian Febus, was also at the hospital being treated for stab wounds. Sources said that Febus claimed to have been in a street fight, but that the boy’s mother was able to identify him as the home intruder. He was subsequently arrested.

Febus faces charges of felony assault and burglary. He has more than a dozen prior arrests, sources said.