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Uganda elections: Police raid main opposition headquarters Uganda elections: Museveni's main rival, Besigye, arrested
(about 1 hour later)
Police have raided the headquarters of Uganda's main opposition party in the capital Kampala, a day after tightly contested presidential elections. Police have arrested Uganda's main opposition presidential candidate, a day after tightly contested elections, a BBC reporter at the scene says.
Tear gas has also been fired outside the offices of the Forum for Democratic Change (FDC). The reason for the security force action is still unclear. Kizza Besigye was detained during a raid on his party's headquarters in the capital, Kampala, as he was about to hold a press conference.
FDC leader Kizza Besigye is President Yoweri Museveni's main challenger in the election. Tear gas was also fired outside the building, our reporter says.
Mr Museveni is running for a fifth term, after 30 years in power. With a quarter of votes counted, President Yoweri Museveni is leading, official results show.
Official results show he is in the lead with 62% of the vote, while Mr Beisgye has 33%, with around a quarter of the votes counted. He is running for a fifth term, after 30 years in power.
BBC Africa Live: News updates He has 62% of the vote, while Mr Beisgye has 33%, according to provisional results released by the electoral commission.
There is a heavy deployment of police and soldiers in neighbourhoods around the headquarters of Mr Besigye's Forum for Democratic Change (FDC) party, reports the BBC's Catherine Byaruhanga from Kampala.
A police helicopter has also been flying overhead.
The police have not yet commented on the reason for Mr Besigye's arrest.
This is the third time in the space of a week that he has been detained.
Voting is still taking place in a handful of places where the late arrival of election materials meant that polling stations did not open on Thursday.Voting is still taking place in a handful of places where the late arrival of election materials meant that polling stations did not open on Thursday.
Social media was also blocked on Thursday in Uganda to prevent people from spreading "lies", Mr Museveni said.
Critics said the decision showed that Mr Museveni, one of Africa's longest-serving rulers, was becoming increasingly tolerant.
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