The priority now is to work out a comprehensive plan for government formation.
The desertion by more than two-thirds of the Congress legislative party makes TMC, a newbie in Meghalaya, the principal opposition in the Northeastern state.
Three people were killed after police opened fire on the night of August 11 to quell a mob that went on a rampage in a city locality, irked over a social media post allegedly put out by a Congress legislator's relative.
Those who quit included deputy chief minister Y JoyKumar Singh.
A first information report (FIR) was registered in Mumbai on Friday against Shiv Sena-Uddhav Balasaheb Thackeray MP Arvind Sawant for referring to Shaina N C, an assembly elections candidate of the rival Shiv Sena, as 'imported maal'.
The Supreme Court on Tuesday asked the Eknath Shinde-led faction if its move to go against the Shiv Sena party's wish to continue with the coalition in the Maha Vikas Aghadi (MVA) amounted to indiscipline leading to disqualification.
The Punjab BJP dubbed the allegations as "baseless" and "bundle of lies" and said AAP is trying to divert attention of people from its "failures".
For the first time since the ethnic violence broke out in Manipur last year, a number of MLAs of Meitei, Kuki and Naga communities are set to hold a joint meeting in New Delhi on Tuesday under the supervision of the home ministry, officials said.