On Monday, Ugandan soldiers and police sealed off the headquarters of the National Unity Platform (NUP) in Kampala.
The move comes as a precaution ahead of planned anti-government protests set for Tuesday, which have been banned by authorities.
National Unity Platform leader Robert Kyagulanyi, known as Bobi Wine, reported on social media that security forces had surrounded the NUP offices, preventing entry and exit.
He claimed that several NUP leaders had been violently arrested and shared images of military personnel and army trucks stationed outside the headquarters.
Police spokesperson Kituuma Rusoke confirmed that the action was a precautionary measure in response to what he described as “mobilization for the protest,” though he did not comment on the reported arrests.
The planned protests, led by Ugandan youth, aim to denounce alleged corruption and human rights abuses under President Yoweri Museveni’s long rule.
Museveni has warned against the demonstrations, alleging they are foreign-sponsored and threatening to take action against those involved.