The party promptly announced it would slap show cause notices on Ghosh for his anti-party comments at the programme. Two other Lok Sabha members Tapas Pal and Satabdi Roy, who also aired their grievances at the forum, are facing similar action.
Within hours of his outburst, police summoned Ghosh for interrogation.
On Saturday, after four hours of questioning, Ghosh alleged a "conspiracy" has been hatched against him.
The journalist-turned-MP has virtually threatened his party saying he was not "revealing things for the sake of courtesy" and demanded the constitution of a party commission on the issue, as "I don't want to make public, things relating to the party".