International Human Rights group say the Sri Lankan government and the Tamil Tigers are accountable for the thousands of innocent lives that has been killed during the war. On the same day, the government announed the appointing of eight commissioners for the Commission on Lessons Learnt and Reconciliation (CLLR).
In a statement issued on Monday the President's office states that the commission is to report the lessons to be learnt from the events "that may have taken place during the period between 21st February 2002 and 19th May 2009".
A Norwegian brokered ceasefire between the Sri Lankan government and the Tamil Tigers that came into effect in February 2002 ended with the government pulling out of it in 2008.
The war that intensified between the two parties since then was declared over by the government following the death of the Tamil Tiger leadership.
Announcing the appointment President Rajapakse calls upon the commission to probe "facts and circumstances which led to the failure of the ceasefire agreement" and "the sequence of events that followed" up to the government's declaration of military victory.
Former Attorney General
The President has informed the cabinet that the establishment of the commission was influenced by the South African experience and the Iran inquiry of the UK.
The commission was also charged with reporting on the measures to prevent return to conflict and measures to promote national unity amongst all communities in the country.
Led by former Attorney General CR De Silva the commission comprises Dr. Amrith Rohan Perera, Prof. Mohamed Thahir Mohamed Jiffry, Prof. Karunaratne Hanagawatta, Chandirapal Chanmugam, Hewa Mathara Gamage Siripala Palihakkara, Mrs. Manohari Ramanathan, and Maxwell Parakrama Paranagama.
Report within six months
Within six months the commissioners are to report on 'the facts and circumstances which led to the failure of the ceasefire agreement on 21 February 2002 and the sequence of the events that followed thereafter up to the 19th May 2009'.
However, the President's office earlier announced that the commission will investigate violations of international guidelines during the war.
US ambassador to the UN Susan E Rice welcomed the Sri Lankan Governments intention to appoint a commission and its acknowledgment of the importance of 'accountability for serious violations of international humanitarian law'.
The announcement by the government in early May stated that the CLLR will 'search for any violations of internationally accepted norms of conduct in such conflict situations, and the circumstances that may have led to such actions, and identify any persons or groups responsible for such acts,' during the final stage of the war.
Former UN High Commissioner Louise Arbour, current President of the International Crisis Group (ICG) told the BBC Sinhala Service in an exclusive interview that "the Commission appointed by the government is unresponsive to the allegations of violations raised by our report".