MEXICO CITY (AP) _ Ten government officials died Wednesday afternoon when their helicopter crashed into a fog-shrouded mountain in southern Mexico, the Office of the Presidency said.

The dead include officials from the Joint Chiefs of Staff, the Presidency and the state of Oaxaca, according to the presidency statement.

They were working out final logistics for a tour that President Carlos Salinas de Gortari planned to make of Oaxaca. The tour was postponed after the crash.

The statement said the pilot lost his way in heavy fog and crashed into a mountain near the remote village of Huautla de Jimenez, about 130 miles south of the state capital, Oaxaca City.

Officials in Oaxaca could not be reached for comment.

The dead were identified as Brig. Gen. Pedro Bautista Perez, assistant chief of operations for the Joint Chiefs; Capt. Guillermo Playan Cuellar, Lt. Col. Rafael Rodriguez, Major Antonio Minor Salazar, all of the Joint Chiefs; Clemente Licon, presidential tour coordinator; Mario Alvarez Lucas, private secretary of the governor of Oaxaca; and Luis Rodriguez of the Presidency press office.

The three-man crew were Capt. Rendon Garcia Corona, Lt. Antonio Garcia and Sgt. Leon Castaneda.