A small plane crashed in a field in eastern Guatemala on Sunday, killing 10 people, including five Americans, aviation and army officials said. The Cessna Caravan 208 was on route to the town of El Estor when it crashed in a field of crops about 60 miles east of Guatemala.

Eight passengers were killed, along with the Guatemalan pilot and co-pilot, Civil Aviation official Jose Carlos said. He said five of the passengers killed were Americans, but nationalities of the other three had not been determined. Four other Americans on board were injured and were being airlifted to a hospital in the capital. Carlos did not know the hometowns of the Americans.

Aero Ruta Maya, the airline operating the plane, said only 12 people were on the plane, including the pilots, a discrepancy that could not immediately be resolved. Joanne de Bickford, who said she was the daughter of the airline's owner and was helping manage the crisis, confirmed there were Americans on board. She said the airline did not know how many people died.