A panel of experts appointed by UN Secretary-General (UNSG) Ban Ki-moon to advise him on the issue of accountability with regard to any alleged violations of international human rights and humanitarian law during the final stages of the conflict in Sri Lanka found "credible allegations" which according to them, if proven, indicated that war crimes and crimes against humanity were committed by the Sri Lankan military and the Tamil Tigers. The panel has called on the UNSG to conduct an independent international inquiry into the alleged violations of international law. The Sri Lankan government has denied that its forces committed any war crimes and has strongly opposed any international investigation. It has condemned the UN report as "fundamentally flawed in many respects" and "based on patently biased material which is presented without any verification". The Lessons Learnt and Reconciliation Commission, a formal commission of inquiry was appointed by the Sri Lankan President, to review the conflict from 1983 to 2009 and its report was tabled in the parliament.