Facebook posts regularly circulate claiming that Nigerian President Muhammadu Buhari is dead and that the man who has taken his place is a lookalike. This is false; reports of Buhari’s death have been greatly exaggerated since 2017, when supporters for the independence of Biafra, a region in southern Nigeria, first began posting the claim on Facebook as part of their public campaign to secede. AFP Fact Check explains why this rumour refuses to die.