The boy was home alone at night when he heard a loud thump and became convinced that a thief was trying to get inside. He quickly got on the phone to the local police who were dispatched to the scene.
After a quick check it turned out that there was no burglar but the boy was still upset and had another problem - his maths homework.
"He had called his mother also but he was on his own when the police got there and they didn't want to leave him alone so they sat down and helped him with his multiplication tables and other homework," Viktor Adolphson of the Södermalm police told Nyheter 24.
Both Adolphson and his colleague Johan Säfström maintain a Twitter feed for the Södermalm police and wrote a bulletin about the incident which spread like wildfire. More than 4,000 people favorited the tweet and praised the officers for helping the youngster with his homework.
11-åring ensam hemma trodde någon bröt sig in, larmade. Det var fel, men han var rädd och patrull stannade kvar. Hjälpte till med matteläxan— YB Södermalm (@YB_Sodermalm) October 17, 2014
The police said the boy was right to alert them in the first place.
"Even though it wasn't a thief it was a good thing to do," Adolphson said.
The Södermalm Twitter cops have often made headlines in Sweden thanks to their blend of crime-fighting and humour. In November last year, The Local tagged along on the beat for a few hours to see behind the scenes.