FDC presidential flag bearer was Thursday morning arrested from his Kasangati home and rushed to Naggalama police station in Mukono where he was detained.
According to police, Besigye was bound to chaos in Jinja town where FDC had a rally.
Police occupied Kakindu grounds in Jinja town to prevent FDC members from attending the rally.
When news of Besigye detention at Naggalama reached supporters, they organised very fast and raided the police station infamous for detaining opposition politicians and activists.
Ugly scenes then followed between FDC supporters and anti-riot police.
The angry crowd accused police of “illegally” detaining their candidate.
They also demanded the release of other three FDC youth who were arrested at Besigye’s home including a one Godfrey Ssembuusi.
Police maintained that Besigye would be released as soon as they realise there is no breach of peace.
The supporters further threatened to wreak havoc and rescue Besigye as well as Kyadondo East MP, Ssemujju Nganda, who had been arrested and taken to the same station earlier.
Also arrested with Ssemujju was The Observer photojournalist, Alfred Ochwo.
The two were beaten up, their clothes torn and mistreated during the arrest that took place in Bweyogerere.
Ssemujju was later transferred from Naggalama Police Station and detained at Kiira road Police Station.
He was later produced at Nakawa magistrates court, charged with disobeying orders and released on Shs800,000 non-cash bail.
Journalist Ochwo was cautioned and released.
As tensions simmered with FDC youth threatening mayhem, police fired teargas to disperse the crowd.
Nonetheless, supporters managed to access the station and give Besigye food.
Clad in a blue hood, Besigye is seen in pictures eating and sharing a drink with a fellow detainee.
Earlier before the arrest, Besigye said he wouldn’t allow his home to be turned into a prison by police because he fights for freedom.
Also earlier, FDC youths battled police in Kireka and ‘forced cops to retreat’ to re-open their party’s Kireka office that had been closed.
Several youths badly beaten in the scuffle.
The office was supposed to be commissioned by Besigye.