Kolkata: Senior Trinamool Congress leader Mukul Roy, once the right-hand man of Chief Minister Mamata Banerjee, on Monday announced his decision to quit the party.

“With a heavy heart, I am announcing that I will quit as primary party member of the Trinamool Congress,” Roy said at a packed media conference here. Roy, one of the founding members of the Trinamool, said he has already sent in his resignation from the party working committee.

“I will formally quit the party’s primary membership and as Rajya Sabha member after the Durga puja,” said Roy.

He, however, refused to divulge more details about his decision or the reason behind it. “The Durga puja is now on. After the Durga puja break, I will explain everything,” Roy added.