Tamil Nadu police arrested 837 people during a 48-hour operation targeting bank accounts allegedly used to route proceeds from cybercrime.
Authorities examined transactions associated with 9,804 cybercrime complaints involving about ₹545 crore.
Police also registered 157 additional cases relating to mule accounts.
Mule accounts are bank accounts used to receive or transfer money linked to fraudulent transactions, often with the account holder acting on behalf of another person or network.
The scale of the operation highlights the growing role of financial intermediaries in cybercrime investigations.