The popular artist and Member of Parliament Bobi Wine, or Robert Kyagulanyi Ssentamu as he is actually called, is Uganda's most famous critic of the country's President Yoweri Museveni, who has been in office since the 1980s.
Wines' music has been banned in the country and he is not allowed to give any concerts.
"Sprayed me with tear gas"
On Tuesday, Bobi Wine submitted his application to run in next year's presidential election in January.
But shortly afterwards, he was arrested by police and thrown into a van.
Wine was held for three hours and says he was tortured, reports Kulturnytt.
"They sprayed me with tear gas, I was forced to hold on to hot metal, I have scars everywhere," he said after being released.
Has been arrested before
This is not the first time that Wine has suffered from his political involvement.
In 2018, he became world news after his car was shot at and he was arrested for an alleged possession of a weapon, and then allegedly tortured by soldiers.
The torture was denied by the Ugandan government but it was confirmed that he had been beaten.
Last year, he was arrested again for his involvement in a demonstration against the country's social media tax of 200 shillings - equivalent to about 50 öre - a day, which he believes was created to control the population.
Wine has tens of thousands of fans and is very popular with the country's younger population.