In October 2007, the United Nations High Commissioner for Refugees (UNHCR) warned of an increasing number of internally displaced people (IDP) in North Kivu related to the fighting there between the government army, the Democratic Forces for the Liberation of Rwanda (FDLR) rebels and renegade troops, including Laurent Nkunda's forces, and a build-up of military supplies and forces, including the reported recruitment of child soldiers by armed groups across North Kivu. The UNHCR thought that there were over 370,000 people in North Kivu displaced since December 2006, and is expanding its camps in the Mugunga area where over 80,000 IDPs were estimated. The brief capture of Goma, by M23 rebels caused "tens of thousands" of refugees. The town of Sake was abandoned.