Ugandan pop star and MP Bobi Wine has been prevented from leaving the country to seek medical treatment despite being granted bail, his lawyers say.
He was charged with treason last week, following the alleged stoning of President Yoweri Museveni's convoy.
On Monday, a judge said he did not constitute a flight risk and granted him bail along with 32 other opposition politicians who had also been charged.
But a lawyer for Bobi Wine said the star was re-arrested on Thursday.
"[He] was re-arrested at the airport, even though the judge had let him have his passport because he needed to leave the country for medical reasons," Robert Amsterdam told the BBC.
"He was violently thrown into a police ambulance. The lawyers have no idea where he is being taken and we're all really in shock," he added.
Bobi Wine, whose real name is Robert Kyagulanyi, appeared on crutches during Monday's court appearance. His allies say he was tortured by elite presidential guards during his detention.
The army have described the allegations as "rubbish" and a police spokesperson told the BBC that the authorities want to carry out their own medical tests.
His aides say he was re-arrested at Uganda's main international airport where he was planning to board a plane to Washington to seek further medical treatment.
"He's in tremendous pain and suffered very serious injuries," Mr Amsterdam said of the star's condition. "There's not a part of his body that isn't in pain."
"His children were going to stay in Uganda. It was a brief trip, simply for a medical evaluation," he said.
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