Africa's richest woman accused of fraud

Africa's richest woman, Isabel Dos Santos, has been formally accused of embezzlement by prosecutors in Angola.

Attorney General Helder Pitta Groz said the allegations related to her time as chairwoman of state oil firm Sonangol.

Several other people have also been accused alongside Ms Dos Santos.

Mr Pitta Groz said an international arrest warrant would be issued for them if they failed to present themselves to Angolan authorities.