New York, NY (BBN)- A United Nations human rights expert has called for the immediate establishment of an independent inquiry into the authenticity of a video which purportedly depicts the extrajudicial execution of two naked and helpless men by the Sri Lankan military and the presumed prior executions of others.

Philip Alston, the UN Special Rapporteur on extrajudicial, summary or arbitrary executions, said he was aware that the Sri Lankan government had categorically denied the allegations raised by the video, which has been aired this week.

“These images are horrendous and, if authentic, would indicate a serious violation of international law,” Professor Alston said in a statement, noting that the government’s denial “makes it all the more important for an independent investigation to be set up.

Earlier this year government forces declared victory over the rebel Liberation Tigers of Tamil Eelam (LTTE) after years of fighting in the small South Asian country, the UN said.

Professor Alston added that he regretted that the Government had not yet issued him an invitation to make an official visit to Sri Lanka, despite a number of requests in recent years, but he hoped an invitation may come given the new allegations.

Like many other UN rapporteurs, Professor Alston reports to the UN Human Rights Council in Geneva and to the General Assembly and he serves in an independent and unpaid capacity.

BBN/SS/SI/AD-29August09-4:17 pm (BST)