Additional Chief Judicial Magistrate Sougata Roy Chowdhury passed the order after Mitra's counsel did not press for bail.
The counsel requested the court that Mitra be treated as a division I prisoner and provided with all necessary medical assistance as he is suffering from various ailments.
Mitra, former state transport minister who was arrested on December 12, 2014, had surrendered before the court after his bail was cancelled by the Calcutta High Court on November 20.