Accusing TMC of holding Parliament to ransom over the arrest of its party leaders in connection with Saradha scam, BJP national secretary Siddharth Nath Singh on Tuesday said Mamata Banerjee's protests over arrest of her cabinet minister Madan Mitra was due to the fear that he might "sing before CBI".

"Parliament is being held to ransom by TMC, the Left, Congress and few other regional parties. TMC senior members are either under arrest or have been quizzed by CBI for their involvement in the Saradha scam," Singh said in a statement. "The question BJP would like to ask to Mamata Banerjee is why is she portraying TMC as a victim of a BJP-sponsored conspiracy ? Is it not true that her worry is not the arrest of Madan Mitra but what if he sings to CBI and what will then happen?" he alleged.

The BJP leader said it is well known in the public domain that Mitra was close to Saradha Group chief Sudipto Sen and knows enough about the scam. Besides, the apex court had ordered inquiry into the Saradha scam when BJP was not in power. CBI was granted custody of West Bengal Transport Minister Madan Mitra till December 19 by a city court.