MUMBAI: A 70-year-old doctor was cheated by cyber criminals of Rs 3 crore and kept under "digital arrest" for eight days after being accused of involvement in a non-existent money laundering scam, a Mumbai police official said on Saturday.

In the month of May, the victim got a call from a person identifying himself as telecom department staffer Amit Kumar, who told her a SIM card had been bought with her personal details for use in criminal activities. "She then got a call from another person who identified himself as Crime Branch officer Samadhan Pawar. He told the victim that her bank account and debit card details were found in a raid at the residence of an airline company owner who was earlier arrested for money laundering and is currently out on medical bail," the official said.