LEON, Spain (AP) _ A small French-owned airplane flying in thick fog crashed into a mountain near this northern city, killing all five people on board, a civil defense spokesman said Friday.

The spokesman, Jose Manuel Sariego, said rescue workers located the wreckage and the charred bodies Friday morning on Pico El Celleru mountain about 35 miles north of Leon.

The plane, a Piper-32, had left the northern city of Oviedo early Thursday for Madrid. When it failed to arrive in the Spanish capital, civil defense officials ordered a search, Sariego said.

Sariego identified the dead as Frenchmen Jacques Lamarque, Ciril Laurent, Catherine Moucheri and Valeri Niore, and Francisco Busquet, a Spaniard. Lamarque was the pilot, Sariego said.

He said the hometowns of the victims were not known.

Investigators said the plane was flying in heavy fog when it struck the face of the mountain at a point 424 feet above sea level.

It was owned by the French air club of Auxerre, Sariego said.