New Delhi, Dec. 17 -- Central Bureau of Investigation (CBI), in coordination with the United States's Federal Bureau of Investigation, has dismantled a major transnational cybercrime network operating from Noida that defrauded US nationals of USD 8.5 million through tech-support scams.

The operation, carried out under Operation Chakra, led to the arrest of six key operatives and the recovery of Rs 1.88 crore in cash along with 34 electronic devices, including mobile phones, laptops, hard disks, pen drives and incriminating documents pertaining to crime. An illegal call centre being run by the accused in Noida was also shut down.

Reacting to the crackdown, the US Embassy in India said the action was "a great example of #USIndia partnersh...