Mali’s interim President Bah Ndaw and Prime Minister Moctar Ouane have officially resigned.

Mr Ndaw and Mr Ouane have been detained since Monday evening at a military camp outside the capital, Bamako.

The officer who led last year’s coup and became vice-president of an interim government, Col Assimi Goïta, accused them of failing in their duties and seeking to sabotage the country’s transition.

Reports of their resignations come as West African mediators visit the country hoping to organise their release from military detention.