Supporters of Cameroonian opposition leader and presidential candidate Issa Tchiroma Bakary gather materials from the streets to build barricades following the announcement of presidential election results in Yaounde on Monday. Mr. Tchiroma's supporters have been protesting the expected outcome for the past week.

Angry protesters have attacked election offices and blocked streets with burning barricades across Cameroon after the authorities declared victory for the 92-year-old president, Paul Biya, in an outcome widely seen as rigged.

Mr. Biya, the world’s oldest head of state, has dominated Cameroon for the past 43 years and can now govern to the age of 99 if he stays alive. He was so confident of victory that he spent 10 days at a luxury hotel in Switzerland in the middle of the electi

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