Tripura chief minister Biplab Kumar Deb on Saturday resigned from the post, a year before the state goes to polls.
Union minister Bhupendra Yadav and BJP general secretary Vinod Tawde to be sent as Central observers to elect a new chief minister for Tripura from among BJP MLAs.
The BJP legislative party will meet at 5 pm to pick its new leader.
Deb became the chief minister of the state after the BJP won the 2018 Tripura polls, ending the 25-year-long rule of the Left Front government.