New Delhi, Sept. 21 -- A 78-year-old retired banker from south Delhi lost nearly Rs.23 crore after allegedly being put under "digital arrest" for a month by cyber criminals impersonating Mumbai Police officials, officers said on Saturday. The victim, Naresh Malhotra, who lives alone at his Gulmohar Park home near Hauz Khas, was coerced between August 4 and September 4 into selling equity shares and transferring Rs.22.92 crore into the fraudsters' accounts in multiple transactions. "This is apparently the highest amount a victim of digital arrest has lost in the capital in recent months," said two senior Delhi Police officers. According to police, the scammers alleged Malhotra's Aadhaar details were used to open bank accounts linked to terror funding and the Pulwama attack. They threatened to kill his daughters and grandchildren if he revealed anything. Malhotra said in his complaint, "On August 4, the scamsters sent me a bail approval, preventing the arrest. They frightened me with a gagging order to report every two hours from 8am to 8pm and made me give daily undertakings to maintain secrecy under the National Secret Act." An FIR was registered on Friday by the Intelligence Fusion and Strategic Operations (IFSO) unit, which froze about Rs.1.5 crore from the criminals' accounts. Malhotra told police he had undergone knee surgery in July and received a threatening landline call on August 1. The caller, impersonating a Mumbai Police official, convinced him to share bank, demat, and family details, sending a fake court order that seized his assets, including his passport. Joint commissioner of police (IFSO) Rajneesh Gupta said they have registered a case and are probing the fraud....