Mr Kumar, who earlier headed the Rose Valley scam probe, gave himself up before the fifth Special Judge, Bankshall Court, Debabrata Sinha, who rejected his bail plea and sent him to police custody for 10 days for alleged extortion, criminal conspiracy and under the Prevention of Corruption Act.
Earlier, the Supreme Court had rejected Mr Kumar's petition for anticipatory bail and directed him to surrender within a week.
The ED Assistant Director was placed under suspension and removed from the Rose Valley scam probe after the Kolkata police stumbled upon a CCTV footage that showed Mr Kumar and Rose Valley owner Gautam Kundu's wife Subhra Kundu at a Delhi hotel and the check-in counter of the Kolkata airport.
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