It's been more than a month since Nigeria's president, Muhammadu Buhari, traveled to London on what was billed as two weeks' vacation — with routine medical check-ups. He hasn't been back home since.
His government says the 74-year-old is in good health. But many Nigerians are not convinced and wonder whether their president is gravely ill — or worse.
Buhari's long absence comes amid Nigeria's worst economic crisis in years and other pressing national problems, including a famine in the northeast, the region badly hit by extremist Boko Haram violence.