PATNA, July 22 -- Bihar's Economic offence unit (EOU) with the help of Telecom department have busted an international cyber fraud racket with the arrest of six men, including 21-year-old mastermind, from Supaul and Vaishali and seizure of eight SIM box devices, hundreds of used and unused SIM cards, passbook, ATM cards and Credit cards. Those arrested were identified as - Harshit Kumar, Mohammad Sultan (CSC proprietor) and four POS operators. The accused were supplying Indian SIM cards to cyber fraudsters in southeast Asian countries such as Thailand and Cambodia to target Indians through fraudulent calls. The arrests were made during an investigation into a case in which EOU constituted an SIT under the leadership of DSP Pankaj Kumar who raided separate places in Supaul and Vaishali districts. During investigation, the SIT found that Harshit, the mastermind of the gang, was arrested from Gauspur in Supaul and seized many devices. He contacted cyber frauds of China, Vietnam, Cambodia and other countries through Facebook and social media platforms and later joined telegram groups. The international fraudster offered him money to run a SIM box. Later, Harshit got four SIM boxes each from China and Vietnam. SIM boxes help to run a parallel telephone exchange. The calls originated from Cambodia and Thailand as VoIP calls and were then converted into GSM calls using SIM cards and SIM boxes. "More than 10,000 fake calls were made by the cyber fraudster causing huge losses to the telecom department. Investigation revealed that Harshit procured 1000 SIM from one Sumit Shah of Pakur in Jharkhand in the March month. Sumit also procured SIM cards from one Sultan, who also provided 400 SIM cards to Harahit," said ADG (EOU) Nayyar Husnain Khan. During the primary probe, it surfaced that Harshit came into contact with his counterparts in Thailand and Cambodia through Telegram, and he knew the kingpin. Upon further questioning, Harshit revealed that they befriended foreigners living in Thailand and Cambodia through Telegram. After some time, a Telegram user from Thailand contacted them, providing detailed information about SIM boxes and suggesting that there was a good scope for fraud in India using SIM boxes. "Harshit and Sumit frequently met in Vaishali and on each visit, they took SIM cards with them, which were collected by different persons fraudulently. They managed SIM suppliers and Telecom Service provider (TSP) for procured SIM cards. Sultan, who runs a common service centre (CSC) organised a fake camp on the pretext of government schemes to collect biometric data. The data help him to collect SIM cards from TSP, registered distributors and retailers," said Khan. Sumit Shah has been arrested from Birbhum in West Bengal and is currently in jail. More than eighteen complaints registered against him were found on the national portal. The syndicate has established links with West Bengal, Uttar Pradesh, Goa, Karnataka, Delhi, Odisha, Jharkhand, as well as the UAE, Cambodia, Thailand, Hong Kong, China, Vietnam, the UK, and Germany. The EOU found an account on the Crypto Exchange in the name of Harshit and evidence of credit and debits. "The fraudulent calls started abroad through VoIP and were then converted to GSM calls using SIMs and SIM boxes. We also suspect that Indian people have been employed in Thailand and Cambodia for making these calls," said an investigator....