Two of Mamata Banerjee's ministers and two other leaders arrested this morning in a bribery case had their bails put on hold late in the evening after the CBI challenged their bail in the Calcutta High Court. Bengal Ministers Firhad Hakim and Subrata Mukherjee were arrested early this morning in the Narada bribery case. So were Trinamool MLA Madan Mitra and Sovan Chatterjee, who went from the Trinamool to the BJP but quit that party too.