The United National Party Parliamentarians gathered at the meeting room of Temple Trees began signing an impeachment motion against President Maithripala Sirisena, a short while ago.
The impeachment motion against the President will be presented mainly for violating the constitution by appointing former President Mahinda Rajapaksa as the Prime Minister, UNP sources said.
They also added that a No-Confidence motion is likely to be presented against Rajapaksa as well.
National Freedom Front Leader Wimal Weerawansa last evening demanded Prime Minister Wickremesinghe vacate Temple Trees by 8 am today.
Although the deadline has been long passed, a large number of UNP MPs and their supporters are seen inside the Temple Trees premises, protecting their leader Ranil Wickremesinghe.