BEIJING, May 7 (Xinhuanet) -- UN human rights investigators say they have gathered testimony from casualties of ’s civil war and medical staff indicating that rebel forces have used the nerve agent sarin.

The independent commission of inquiry on Syria says it has not yet seen evidence of government forces having used chemical weapons, which are banned under international law.

The investigators gave no details as to when or where sarin may have been used. The Geneva-based inquiry into war crimes and other human rights violations is separate from an investigation of the alleged use of chemical weapons in Syria organized by UN Secretary-General , which has since stalled.

President Bashar al-Assad’s government and the rebels accuse each other of carrying out three chemical weapon attacks.

(Source: CNTV.cn)