[10] A 2009 United States diplomatic cable leak however indicates that the International Committee of the Red Cross and the High Commissioner of India in Sri Lanka reported that their medical teams treating the wounded during the final stages of the war came across no evidence of chemical weapons use by government forces as alleged by Tamil groups.
[1] The UN Secretary General's Panel of Experts on Accountability in Sri Lanka reported allegations that chemical agents were used against civilians, but stated that it could not reach a conclusion regarding their credibility.
[12][13][14] In January 2014, the Roman Catholic Bishops in the former war zone called for an international inquiry as to whether government forces used cluster munitions and chemical weapons in densely populated areas.
In 2007 the Sri Lankan Prime Minister Ratnasiri Wickremanayake claimed that security forces had intercepted rebels transporting large quantities of acid in preparation for a major attack.
[1] In 1990 the LTTE conducted a chemical attack using commercially obtained barrels of chlorine gas against a Sri Lanka army encampment in eastern Kiran, in the Batticaloa district.