Nigeria's ex-interior minister has been charged with fraud over a botched recruitment drive, which resulted in stampedes that left 20 people dead.

Burundi's President Pierre Nkurunziza has said he will release 2,000 prisoners detained since protests broke out against his rule in April.

Social media has been blocked in Uganda on the day of presidential elections to stop people "telling lies", President Yoweri Museveni has said.

South Africa's top court is to rule on whether President Jacob Zuma should pay back about $23million of state funds used to renovate his rural home.