On this edition of Africa 54: at least 51 people were reported killed when Islamist militants raided three villages in central Mali near the Niger border. Rwandan and Mozambican security forces say they have recaptured the insurgent stronghold port town of Mocimboa da Praia, And one abducted Nigerian girl from Chibok has been freed 7 years after Boko Haram militants kidnapped her and more than 200 of her classmates.