NEW YORK ( CNN ) -- All 11 people aboard a U.N. plane carrying military personnel died Friday afternoon when the aircraft crashed into a mountainside in Haiti , a spokeswoman said . The victims were from Uruguay and Jordan , said Michele Montas , the U.N. spokeswoman . The cause of the crash of the Casa C-212 was unknown ; an investigation has been launched . The plane , part of the U.N. mission in Haiti , was doing routine surveillance on the border with the Dominican Republic , she said . The plane crashed 20 kilometers ( 12 miles ) west of the village of Fonds-Verrettes in an area accessible only by foot , Montas said . The mission is called the United Nations Stabilization Mission in Haiti , or MINUSTAH .
NEW : All the people aboard U.N. plane killed in Haiti crash , CNN says . NEW : Military personnel aboard plane were from Uruguay and Jordan . NEW : The Casa C-212 plane crashed into a mountain . Plane was conducting routine operations near Dominican Republic .