Under the current UNSGM guidelines and procedures, investigations of alleged use of chemical weapons took place in Mozambique and Azerbaijan in 1992. The most recent activation of the UNSGM was in March 2013, when the Secretary-General established the UN Mission to Investigate the Allegations of the Use of Chemical Weapons in the Syrian Arab Republic.

Report of the Secretary-General’s investigation into the alleged use of chemical weapons in the Syrian Arab Republic, 2013
Report of the Secretary-General’s investigation into the alleged use of chemical weapons in Azerbaijan, 1992
Report of the Secretary-General’s investigation into the alleged use of chemical weapons in Mozambique, 1992