The former president of Portuguese football club Benfica was arrested in London on Tuesday amid allegations of fraud.
Joao Vale e Azevedo, 51, attended Belgravia police station by appointment this morning and was arrested by the Metropolitan Police's extradition unit, Scotland Yard said.
Vale e Azevedo, a Portuguese national living in Wilton Place, in London's exclusive Knightsbridge area, was held under an EU arrest warrant issued by the Portuguese authorities in connection with a fraud investigation.
He will appear at City of Westminster Magistrates' Court in custody today.
(reopens) The case was adjourned.
Vale e Azevedo will appear before the court again on July 25.