Congo votes over Nguesso third-term
Congo-Brazzaville is holding a referendum on constitutional changes that would allow President Denis Sassou Nguesso to stand for a third term.
Opposition leaders have called for a boycott after a number of protesters died in clashes with security forces.
Under the current constitution, the president cannot seek re-election because he is over the age of 70 and has already served two terms. President Sassou Nguesso first came to power in 1979.
He is now coming to the end of his second seven-year term. He won the last election 2009 with nearly 79% of the vote in a poll boycotted by half the opposition candidates.
Tens of thousands of people took part in a peaceful demonstration against the referendum in September.