The Sri Lankan government has rejected a report commissioned by the UN on alleged human rights violations committed during the final stages of the conflict with Tamil Tiger separatists two years ago.
The report, by a panel of human rights experts, has been submitted to UN Secretary-General Ban Ki-Moon and to the government in Colombo but hasn't yet been made public.
Human rights groups are demanding that the report be released.
The government has been fundamentally opposed to the panel of experts since its appointment by Mr Ban last year and declined to admit them to the country to conduct research, the BBC reports.
The three-member panel, headed by a former Indonesian attorney-general, was mandated to look into issues of accountability connected with the war.
UN officials say this refers to allegations that war crimes may have been committed by either the government or Tamil Tiger separatists, whose top leaders are now dead.