Kweku Adoboli, a former trader at UBS AG, arrives back for his trial at Southwark Crown Court after an adjournment for lunch in London, U.K., on Thursday, Nov. 15, 2012.

Former UBS Group AG trader Kweku Adoboli, who was convicted for causing a $2.3 billion loss at the bank, was detained for a second time when reporting to police Monday, a setback as he fights deportation to Ghana.

The 38-year-old was arrested when he reported for a regular appearance at a police station in Glasgow, supporters said on Twitter. He will likely go to a detention center in London to prepare for being sent to Ghana, ending a saga that has gripped the U.K. financial community for nearly a decade.

Adoboli was attempting to challenge a decision by the Home Office to deport him under U.K. rules that say foreign nationals sentenced to more than four years in prison should be sent back to their country of birth. He left Ghana at the age of four.

The former banker, who was convicted of two counts of fraud for causing the multibillion-dollar loss at UBS’s London unit, was released from prison in 2015. He’s lived in Britain since he was 12, but doesn’t hold British citizenship.

He had been detained and was literally hours away from deportation in September before a judge agreed to review the issue and granted Adoboli bail a few weeks later. But the judge dismissed the case Oct. 24, putting him back in legal limbo.

Nick Hopewell-Smith, a spokesman for Adoboli, declined to immediately comment on the situation.