A helicopter giving its services to the stat-run oil company PEMEX fell down Friday night in western Mexico, killing eight people, Civil Aeronautics Authorities said.

The helicopter Bell402 was traveling from southeastern Campeche state to Minatitlan municipality in Veracruz state, west of Mexico, when according to witnesses it turned into fire in the air.

According to the sources, six mechanics aboard the helicopter and the two pilots died on the spot. The rescue teams already went to the accident area to find the remains of the helicopter.

To the moment the causes of the accident were unknown.