Senior Trinamool Congress (TMC) leader Mukul Roy on Monday resigned from party’s working committee. He said that he will also be resigning from the party and MP’s post after Durga Puja.

“I was the one who was the first to sign, when Trinamool Congress was formed in December 17 1997. With a heavy heart today, I have decided to separate myself from the party. I will reveal the reasons after the Durga Puja,” Roy told media following his resignation in Kolkata.

“Now I am only a working committee member, apart from a Rajya Sabha MP. I have sent an e-mail this morning informing my decision to step down from the working committee. I shall resign from Rajya Sabha immediately after the pujas. About eight months are left for my tenure to end in the Upper House. At the same time, I will also leave the primary membership of the party,” Roy further added.

Roy’s resignation comes amidst reports of his growing rift with party supremo and Bengal chief minister Mamata Banerjee. Speculations are rife that Roy might join BJP. He had held a meeting with party’s top leadership earlier this month.

BJP has also admitted that Roy was in touch with the party.

 “I came to know that Mr. Roy is in touch with our central leaders. We will consider it if he wishes to join BJP,” Bengal BJP president Dilip Ghosh had earlier said.

It is important to note that Mukul Roy was once considered close confidant of Mamata Banerjee. He was also instrumental in party strategy during the 2014 Lok Sabha elections. However, they both had started drifting apart in the past few months. His closeness with BJP is said to have riled TMC leadership which removed him as the chairman of Parliament’s standing committee on transport and tourism.

Roy’s son, Subhrangshu, is also a TMC MLA from Bijpur constituency from North 24 Parganas district.