Paul Biya retains his title as the world's oldest head of state, in an election marred with violence and allegations of fraud.

Cameroon's President Paul Biya, the world's oldest serving ruler, secured an eighth term in office on Monday, election results showed, triggering clashes between security forces and opposition supporters who say the vote was rigged.

Cameroon will learn Monday whether its 92-year-old leader's decades-long rule will extend into an eighth term.

Cameroon's opposition leader Issa Tchiroma Bakary, who has declared himself the winner of the 12 October elections, has told the BBC that he will not accept a stolen vote, with the results due to be announced on Monday. He says his team has compiled the overall picture based on results from individual polling stations, so there is no doubt.

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