Sept. 25 (UPI) -- The crisis of enforced disappearances in Mexico reached the United Nations headquarters in Geneva this week as the U.N. Committee on Enforced Disappearances began to reviewing the issue after receiving reports that it has become widespread and systematic. The review includes information provided by the Mexican government and civil society organizations, as well as relatives of the victims. U.N. experts are seeking to determine the extent of impunity, lack of institutional