Police in Burundi’s capital have opened fire on protesters opposing the president’s bid for a third term.
They used tear gas and live ammunition on hundreds of protesters in the centre of Bujumbura – the closest the protests have got to the presidency.
More than 20 people have been killed since protests against President Pierre Nkurunziza’s decision to stand for re-election began on 26 April.
Rumours of a coup on Wednesday have been dismissed by the presidency.
Burundi’s presidential spokesman Willy Nyamitwe told the BBC Great Lakes service that the rumours had spread over Twitter and were unfounded.
Mr Nkurunziza is currently in Tanzania for a summit with other East African heads of state, who are expected to urge him to drop his election plans.
Meanwhile, Burundi’s influential Catholic Church has called for the elections in June to be postponed.
It said in a statement that it would ask Catholics on the electoral commission to step down if the government refused to yield.