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Cameroon’s former President Ahmadou Ahidjo is believed to be the only African leader to resign due to ill health, in 1982, after ruling for 22 years.

The example has not been adopted by Ahidjo's successor, Paul Biya.

But this low-key style belies the determination with which he contrived his arrival in power in 1982, elbowing aside his patron and predecessor Ahmadou Ahidjo, promising liberalising change before entrenching a hold on the presidency that no subsequent challenger or campaign of protest has managed to shift.

One of the quarterfinals scheduled for Sunday was moved from the Olembe Stadium in Yaounde across town to the Ahmadou Ahidjo Stadium after eight people were killed in a crush outside the Olembe during the round-of-16 game between host Cameroon and Comoros on Monday.

But CAF also said it was moving another quarterfinal and a semifinal from the Japoma Stadium in Douala to Ahmadou Ahidjo Stadium.