Myanmar must carry out a "proper investigation" into alleged crimes against the country's minority Rohingya population, Britain's ambassador to the United Nations said.
Karen Pierce called on Tuesday for the "root causes" of the crisis - which has seen hundreds of thousands of Rohingyas flee Myanmar for neighbouring Bangladesh as a result of what the UN has described as a "textbook example of ethnic cleansing" by government security forces - to be addressed.
"In order to have accountability there must be a proper investigation," Al-Jazeera quoted saying Pierce, part of a four-day UN Security Council (UNSC) envoy visit to Myanmar and Bangladesh.
"It doesn't matter whether it is international or domestic, as long as it's credible."
The probe could be carried out either by the International Criminal Court or Myanmar's own government, Pierce added.
Some 700,000 Rohingyas have fled Myanmar since security forces launched a violent crackdown in the country's western Rakhine state last August, according to the UN, in the wake of deadly attacks on military posts by members of the Arakan Rohingya Solidarity Army (ARSA).
Since then, Myanmar security forces have been accused of rape, murder, torture and setting Rohingya homes on fire.