Hakainde Hichilema has been arrested on treason charges after allegedly refusing to allow the presidential motorcade to pass down a street.
Kinshasa was empty on Monday as the government warned it would break up opposition rallies.
Adama Barrow's party won an absolute majority in parliamentary elections, easily defeating the party of ousted leader Yahya Jammeh
At least a dozen people have been killed in a car bomb attack near Somalia's defense ministry compound in Mogadishu
The Ugandan army says the search for fugitive Lord’s Resistance Army warlord Joseph Kony will continue despite the US withdrawing its forces.
A court in Côte d’Ivoire cleared former first lady Simone Gbagbo of crimes against humanity and war crimes.
A top US military commander says the LRA has been reduced to "irrelevance" after years of joint military operations have killed most of its forces.
Opposition leaders and activists marched in Harare to demand UN assistance for the 2018 election, accusing officials of collusion with the president.
A proposal for an arms embargo was supported by the US in December, but the plan was rejected by the UN Security Council.
Tanzania has announced a plan to send 500 doctors to Kenya after a doctors' strike paralysed health services in the neighbouring country for months.