Updated

The Bolivian air force has found the wreckage of a plane and the bodies of the two crew members and four U.N. workers who were monitoring the cultivation of coca.

Defense Minister Maria Cecilia Chacon says the airplane was found Saturday and there are no survivors. The plane was reported missing after failing to return Thursday to the capital of La Paz.

Everyone on board was Bolivian and included two members of Bolivia's air force and four employees of the U.N. Office on Drugs and Crime.

The plane was found in a remote region of Inquisivi province about 75 miles (120 kilometers) from La Paz.

An investigation into the cause of accident is expected to take about 10 days.