Ugandan opposition leader Bobi Wine said on Tuesday that police had surrounded his residence and put him under house arrest ahead of a campaign rally for a local by-election.
Wine, whose real name is Robert Kyagulanyi, said police and military officers, deployed overnight, had barred him from leaving his home in Magere, north of the capital Kampala.
The military has increased deployment around my home. Wine said on Twitter that no one is allowed to leave or enter, accusing President Yoweri Museveni of placing him under house arrest. The popstar-turned politician came second in the January election when he returned Museveni to power for a sixth term.
On Tuesday Wine was to campaign for an opposition candidate in the central Kayunga district where Museveni is expected to hold a rally.
Wine said that his security guard and gardener had been violently arrested and beaten, and had been bundled into a police vehicle outside his gate, and their phones were confiscated.
Following the January vote, following a crackdown on opposition figures, soldiers and police surrounded Wine's property, stopping members of his household including his wife from leaving.
Wine's National Unity Platform party has alleged that hundreds of his supporters were abducted by security forces in the run-up to the election - some were killed while others were re-emerged weeks later showing signs of torture.
A member of thearmed forces was handed lengthy jail terms last year for their part in violence against protesters, which left more than 50 dead.
The United States had announced earlier sanctions against military intelligence chief Major General Abel Kandiho, citing his involvement in serious human rights abuses including beatings, sexual assault and electrocution.
In March, Wine was arrested for leading a protest in Kampala demanding the release of his supporters.
Museveni has ruled Uganda without pause since seizing control in 1986, when he helped end years of tyranny under Idi Amin and Milton Obote.
The former rebel leader has changed the constitution to allow him to run again and again, once hailed for his commitment to good governance.