In his report on the situation concerning Western Sahara dated 10 April 2015, the UN Secretary-General, Ban Ki-moon, underlined that “Contamination of Western Sahara by landmines and explosive remnants of war continues to endanger the lives of local, nomadic and refugee populations, as well as MINURSO military observers and logistical teams. As at 31 March 2015, 57 cluster strike areas and 41 minefields remained to be addressed. Many are located in areas that have recently seen increased civilian activity. East of the berm, four accidents occurred, in which one civilian and one soldier were killed and five civilians and five soldiers injured. West of the berm, six incidents occurred in which two civilians and one soldier were killed and three civilians and three soldiers injured” (para. 30, S/2015/246).