President Bingu wa Mutharika of Malawi has died, doctors and cabinet ministers have told the BBC, but the lack of a formal announcement is leading to widespread anxiety. Mr Mutharika, 78, suffered a cardiac arrest on Thursday and state media say he was flown to South Africa for treatment. There are fears that his death could lead to a power struggle. Both the UK and US have called for the constitution to be respected. According to the constitution, the vice-president takes over if the head of state is incapacitated or dies in office. But Vice-President Joyce Banda and Mr Mutharika fell out after a row over the succession in 2010, and she was expelled from the ruling Democratic People’s Party (DPP). Read More »