Cameroon: Biya sworn in for sixth presidential term
Cameroon's President Paul Biya has been sworn in for a sixth term after winning elections rejected by the opposition as fraudulent.
Mr Biya, 78, who has been in power for 29 years, won last month's election with 78% of the vote.
His main rival, John Fru Ndi, who received 11% of the vote, said the poll had been rigged.
Mr Biya has promised to improve oil-rich Cameroon's roads and electricity supply during his next seven-year term.
He took his oath of office at the national assembly in the capital, Yaounde.
The US and France said the election had been marred by widespread irregularities.
Mr Biya's critics say he leads a corrupt and an authoritarian government - charges that he denies.
Most Cameroonians live in poverty, even though the country is rich in oil, timber and minerals.
Dozens of people were killed in 2008 during protests after Mr Biya controversially amended the constitution, scrapping the limit to presidential terms.