One of Burundi's vice-presidents has fled the country, saying he felt threatened after opposing President Pierre Nkurunziza's third-term bid.
Burundi has seen months of turmoil since Mr Nkurunziza announced that he would be running for office again in July's election.
Gervais Rufyikiri told France24 TV that a third term for the president would be unconstitutional.
A government spokesman denied that Mr Rufyikiri had been threatened.
There are also reports that Burundi's National Assembly Speaker Pie Ntavyohanyuma has left for Belgium, citing medical reasons. He had also criticized the president's bid for a third term.
Rights groups say at least 70 people have been killed and 500 wounded as demonstrators clashed with police over the past two months. (s:bbc)