At least two people have been killed in violent clashes in Burundi, a day after President Pierre Nkurunziza launched his bid for a third term in office.

Thousands defied a ban to take to the streets of the capital Bujumbura. Police shot live ammunition in the air to disperse them.

President Nkurunziza was nominated to run by his governing CNDD–FDD party.

Opponents say it is unconstitutional and threatens a peace deal that ended the 12-year civil war in 2005.

More than 300,000 people died in the war.