Prime Minister Ranil Wickremesinghe will appear before the Parliamentary Select Committee proving Easter Sunday attacks on August 06.
In addition to the Prime Minister, former Law and Order Ministers Sagala Ratnayaka and Ranjith Madduma Bandara will also testify before the committee on the same day.
Committee members have also started that they will "invite" President Maithripala Sirisena to testify before the PSC.
Speaking to the media last month, however, Sirisena said he would not go before the committee and its proceedings were orchestrated from Temple Trees - the official residence of the Prime Minister