The UNP's assistant leader, Ravi Karunanayake vowed the unity government would keep on going despite the UNP and SLFP's election defeat at the local elections last weekend.
"No matter what sort of political clashes take place, the UNP would not let a reversal of the people's mandate received in January 8, 2015," Mr Karunanayake was quoted by the Daily Mirror as saying.
"People had shown a red light to the government by the recent LG election and they have fair reasons to do so. We have failed to initiate some election promises made on 2015."
His comments come amid reports the Sirisena led SLFP is to quit the coalition however. The Sinhala polity remains in a state of crisis following Mr Rajapaksa's significant victory.