To apprehend someone while they are in the process of doing something wrong or illegal

किसी को गलत या अवैध काम करते हुए पकड़ना

English Usage: The police managed to catch him in the act of stealing.

Hindi Usage: पुलिस ने उसे चोरी करते हुए रंगे हाथ पकड़ लिया।