Jan 15, Colombo: Leader of Sri Lanka's main opposition United National Party (UNP) Ranil Wickremasinghe has decided to conduct an inquiry into the party's former deputy leader and parliamentarian Sajith Premadasa's participation in the impeachment debate.

According to local media reports, the opposition party had named its members who were to take part in the parliamentary debate on the impeachment of the Chief Justice and Premadasa or the party leader was not scheduled to speak at the debate.

However, the deputy leader has taken 15 minutes of the time allotted for Tamil National Alliance parliamentarian A. Sumanthiran and joined the debate, local radio channel Hiru FM reported.

The party has reportedly received several complaints against the MP's participation in the debate in violation of party rules and therefore, the party leader has decided to conduct an inquiry against Premadasa.

Currently Premadasa is without a position in the party as his tenure as deputy leader has expired and the party working Committee has not yet met to make key appointments to party's top positions.