The mining giant BHP Billiton says it has suspended its operations in Angola after a helicopter crash in the west African country killed several leading executives.
A company statement says five people died in the crash.
It says they included BHP's chief operating officer in Angola, Australian David Hopgood, from Melbourne.
The others to die were British operations manager Kevin Ayre, another British staffer Guy Sommerfield, Namibian businessman Louwrens Prinsloo, and Kottie Breedt, the South African pilot.
The helicopter crashed on Friday afternoon in bad weather about 80km from a diamond exploration facility in northeastern Angola.