Some unidentified persons entered a post-office after breaking its wall in Shahdara's Mansarovar park area and decamped with Rs 487, police said on Tuesday.
The incident took place on Monday and a case has been registered in this regard, they said.
The post-office is located inside an old building in Mansarovar Park area, the police said, adding the suspects made a whole in the lower part of the building's wall to enter it.
"They fled from the spot with Rs 487. We have scanned the CCTV camera footage and found that a young boy was also involved in the incident," a senior official said.
Police are trying to nab the suspects, the officer said.