Kolkata, Dec 13 (ANI): Trinamool Congress leader Madan Mitra has reportedly been sent to CBI custody till Dec 16 in connection with the Saradha scam case. He was produced in Alipore court on Saturday, a day after the CBI arrested him. Mitra, however, termed his arrest as a political conspiracy. Earlier, supporters of the Yuva Trinamool Congress blocked the vehicle in which he was being taken and threw flowers on his car. West Bengal Chief Minister Mamata Banerjee has said that Mitra will remain the transport minister and she would handle the ministry in his absence. On Friday, Banerjee sparked a controversy after backing the senior TMC leader. She said that Mitra's arrest was unconstitutional and slammed the CBI and BJP government at the Centre, accusing them of conspiring against her party.