Police in Uganda briefly arrested presidential candidate Kizza Besigye on Thursday after he tried to enter a house he said was being used for rigging the national elections.
VOA's Swahili service said Besigye was released later in the day and taken to his home in Kasangati, north of the capital, Kampala. It was not clear whether he was being placed under house arrest.
A Ugandan newspaper, the Daily Monitor, said Besigye and a group of supporters accused authorities of pre-marking ballots and manipulating election results in the house, located in a Kampala suburb, Naguru. Police blocked the candidate from getting inside the home.
With the polls closed, vote tabulation was underway. Ugandans appeared to have turned out in large numbers to cast ballots Thursday for president, parliament and local government seats. More than 15 million Ugandans were registered to vote.
Poll workers preparing for voters to come inside at Mulago polling station in Kampala, Uganda, Feb. 18, 2016. (J. Craig/VOA)
President Yoweri Museveni, in power for 30 years, faced a challenge from seven opponents, most prominently Besigye, who lost to him in three previous elections.
Uganda's Electoral Commission extended voting by three hours in some parts of Kampala and nearby Wakiso after many polling stations opened late, often because of late-arriving ballot papers.
Would-be voters mill about a polling station at Makerere University, Feb. 18, 2016. (J. Craig/VOA)
At one station in Kampala, police fired tear gas to disperse angry residents who had waited seven hours in line, only to find there were no ballots for the presidential poll.
The delays led some voters to question whether the election was being conducted fairly. Makerere University education student Ivan Ssebuliba said, "If this is happening in Kampala, so close to the Electoral Commission, what is going on in the villages?"
Voters line up at a polling station just behind the Electoral Commission. Here around 200 names were missing from the voting register, Feb. 18, 2016. (L. Paulat/VOA)
Military Police were out in full body armor. Voters say they felt as though their presence was intimidation, Feb. 18, 2016. (L. Paulat/VOA)
In the suburb of Kyabando Erisa, voters clash with police over the lack of ballot papers. Many say they are worried their vote won't be counted, Feb. 18, 2016. (L. Paulat/VOA)
A woman votes at the National Theatre in the Central Business District of Kampala, Feb. 18, 2016. (L. Paulat/VOA)
At the National Theatre, the biometric machine used for voting worked well. Many voters here said they were pleased at how smoothly the system was running, Feb. 18, 2016. (L. Paulat/VOA)
Voters in the suburb of Mbuya line up at 7pm. Many said they were excited to vote, Feb. 17, 2016. (L. Paulat/VOA)
At another polling station near the Electoral Commission, polling observer Simon Katum said about 200 voters had been left off the official register.
Still others were upset by a block on social media sites such as Twitter, Facebook and Instagram. The head of the Uganda's Communications Commission said the sites were blocked for "security reasons."
Besigye accused Museveni and the ruling NRM party of using poll-rigging and intimidation of voters to secure victory in the 2006 and 2011 elections.
As of 7:30 am there had still been no ballots delivered to this polling station at Makerere University, Feb. 18, 2016. (J. Craig/VOA)
VOA's Lizabeth Paulat contributed to this report