Nigerian authorities have vowed to provide justice after armed men in Burkina Faso attacked a group of Nigerian pilgrims on their way to Senegal, killing at least 16; South African President Cyril Ramaphosa says the county's electricity crisis has severely damaged its mining industry, a key pillar of the economy; And a general once close to the Republic of Congo’s long-serving President Denis Sassou Nguesso has been released after serving a five-year term for an alleged assassination plot.