New Delhi, Oct. 31 -- A 28-year-old BTech graduate from Jharkhand's cybercrime hub, Jamtara, has been arrested in Kolkata for allegedly running a nationwide data racket that obtained confidential personal and banking details from the dark web and sold them to cyber fraudsters across several states through a Telegram channel he operated under the name Baba Kismatwale, police said on Thursday.

The accused, identified as Niwash Kumar Mandal, allegedly ran the channel for over a year, charging Rs.15,000 per member as a one-time fee to access the data. "He earned around Rs.30 lakh through membership fees alone, and more by selling the personal information of thousands of individuals," an officer said.

Two others - one of them a 17-year-old b...