Haiti ? A surveillance plane assigned to the U.N. peacekeeping mission in Haiti crashed into a mountain Friday, killing all 11 military personnel on board, the United Nations said.

U.N. spokeswoman Michele Montas in New York said the Uruguayan CASA212 aircraft went down in rugged terrain west of Fonds-Verrettes near the border with the Dominican Republic, some 28 miles from the capital, Port-au-Prince.

“The aircraft was on a regular reconnaissance flight,” Montas said in a statement.

Rescue teams had to reach the area by foot because there were no roads nearby, and they found no survivors, she said.

U.N. police were guarding the crash site, where all bodies were recovered and would be taken back to the capital of Port-au-Prince, according to a statement from the U.N. peacekeeping mission in Haiti.

U.N. Secretary-General Ban Ki-moon “extends his heartfelt condolences to the family members, friends and colleagues of these brave peacekeepers who lost their lives in the service of peace,” Montas said.