The Supreme Court on Monday postponed to Tuesday the hearing of a CBI plea against Kolkata Police Commissioner Rajeev Kumar, declining a plea by Solicitor General Tushar Mehta.
Rajeev Kumar is accused of destroying evidence related to the Saradha chit fund scam.
Describing the situation as "extraordinary", Mehta said: "We fear evidence will be destroyed."
"If Kolkata Police Commissioner even remotely thinks of destroying evidence, bring the material before this Court. We will come down so heavily on him that he will regret," said CJI Ranjan Gogoi.
West Bengal Chief Minister Mamata Banerjee continued her sit-in protest in Kolkata on Monday over the Central Bureau of Investigation's attempt to question Kumar in connection with a ponzi scheme scam.
The Trinamool Congress supremo has accused Prime Minister Narendra Modi and Bharatiya Janata Party chief Amit Shah of attempting to destabilise her government.
(With inputs from IANS)