Earlier on Wednesday, the party had removed him from the list of star campaigners for the upcoming Lok Sabha Election.
According to reports, he had said that a proposal to expel him was being prepared by the state unit to be sent to the central leadership.
The proposal was made after Nirupam made a string of remarks against Congress' INDIA ally, Shiv Sena (Uddhav Balasaheb Thackeray), and its leader Uddhav Thackeray following the party's announcement of some candidates for the Lok Sabha constituencies in Maharashtra including the North West Mumbai seat.
Nirupam eyed this seat to contest in the upcoming Lok Sabha polls.