The United Nations mission currently investigating alleged use of chemical weapons in seven sites in Syria expects to end its work in the country next Monday and hopefully will present its \"comprehensive\" and final report to Secretary-General Ban Ki-moon by late October, the UN announced on Friday. The report will be based on a number of allegations presented to the United Nation, of which seven have been found to warrant investigation. The seven incidents are Khan al-Assal, 19 March 2013, Sheikh Maqsoud, 13 April 2013, Saraqeb, 29 April 2013, Ghouta, 21 August 2013, Bahhariyeh, 22 August 2013, Jobar, 24 August 2013, Ashrafiah Sahnaya, 25 August 2013. The team of experts, which returned to Damascus on September 25th, already investigated the use of chemical weapons in Ghouta on August 21st and presented its report to Ban. The report confirms undoubtedly that the banned weapons were used in Ghouta that day, but did not say who did it. Based on that initial report, the Security Council is expected to vote later this evening on a US-Russian draft resolution condemning the use of chemical weapons and threatening Syria with sanctions if it does not comply