On this edition of Africa 54: Zambians went to the polls on Thursday in a showdown between President Edgar Lungu and main opposition rival Hakainde Hichilema that looks too tight to call; The African Union's peacekeeping mission in Somalia said it had started investigating reports that civilians were killed during a gunfight between its troops and al Qaeda-linked al Shabaab fighters; And the Tanzanian government suspended a local newspaper for running what it called a false story saying that President Samia Suluhu Hassan would not vie for office in 2025, the first newspaper suspension in Hassan's tenure.