Cameroon's Constitutional Council has dismissed all petitions contesting the October 12 presidential election, paving the way for the announcement of full results while security forces and opposition supporters clashed in the north.

With 92-year-old President Paul Biya reportedly poised for an eighth term in office, protests have erupted in the capital and other cities in the Central African nation over alleged election irregularities.

On Wednesday, the Constitutional Council rejected 10 petitions containing allegations of ballot-stuffing, voter intimidation and other irregularities, citing insufficient evidence or lack of jurisdiction to annul the election. Its decisions are final and not subject to appeal.

Issa Tchiroma, a former Biya ally now in opposition, has claimed on his official campaign page that he won the election with 54.8% of votes based on results representing 80% of the electorate.

Government rejects allegations of vote-rigging

He had refused to submit a petition with the council, and has warned that he will not accept any other result.

The government has rejected allegations of vote-rigging, and has urged people to wait for the results.

Sporadic protests erupted in several cities after partial results reported by local media showed Biya, the world's oldest head of state, on track to win.

Another seven-year term could keep him in power until he is nearly 100 years old.

Police engage protesters

On Wednesday, clashes broke out between security forces and Tchiroma supporters in the northern cities of Maroua and Garoua.

In Maroua in the Far North region, protesters clashed with security officers who threw tear gas canisters on Wednesday.