Angola’s President Jose Eduardo dos Santos has appointed his daughter as head of the state oil company Sonangol.
Isabel dos Santos, named by Forbes magazine as Africa’s richest woman, worth an estimated $3.3bn (£2.3bn), takes on the job after the entire board was sacked by her father in April.
Critics accuse President dos Santos, who has ruled since 1979, of being increasingly authoritarian.
Ms Dos Santos has large stakes in many of Angola’s strategic industries, including diamonds, banking, media and telecommunications, with large parts of her business empire based in Portugal.
Angola and Nigeria are Africa’s largest oil producers.