Birbhum Superintendent of Police Mukesh Kumar said the accused Samir Mallik was arrested from his residence by a Delhi police team, who were accompanied by the state police.
The SP refused to divulge any further details.
The arrested man is suspected to be an accomplice of the main accused, who had been picked up in Delhi few days back in connection with a banned narcotics substances racket. He hailed from Pandabeswar area of Birbhum's neighbouring Burdwan district, they said.