Sharam Muhamadi failed to surrender to the court
'Manhunt'
Muhamadi, who is from Iran, was found guilty of two counts of arranging or facilitating travel of another person with a view of exploitation.
He was cleared of two other counts of arranging or facilitating travel of another person with a view of exploitation and one count of rape.
Under the judge's directions, the jury was also asked to return a not guilty verdict on one count of sexual assault.
Muhamadi stopped attending the trial partway through and was convicted in his absence, with a warrant out for his arrest.
He had been remanded in custody between charge and the beginning of the trial, South Yorkshire Police said, but his defence team's application for bail was then granted by the court.
Under his bail conditions, a surety of ยฃ19,000 was provided by Amin Haydar.
On Thursday, Judge Wright ordered Haydar to forfeit the sum within 28 days after the defendant failed to attend court.
Judge Wright said she would allow for more time to apprehend Muhamadi, with a view to sentencing him at a later date.
A police spokesperson said: "A manhunt is currently under way to locate 21-year-old Sharam Muhamadi and we will not stop until we find him.
"Our officers have been working relentlessly, exploring every single line of inquiry with determination to secure justice for the victims."
The trial heard that, after arriving in the UK as an unaccompanied asylum seeker, Muhamadi was taken into the care of social services in Bradford.
He then made a claim for asylum in 2021 at the age of 16 and was granted leave to remain in the UK in 2022, to be reviewed in 2027.
In 2023, he moved to Doncaster and began working "long shifts" in a shop.
A Crown Prosecution Service (CPS) spokesperson said: "The CPS robustly opposed bail applications made by the defence throughout the court process.
"Ultimately decisions as to whether to grant bail are made by the court."
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