Former Rangers chief executive Charles Green is being questioned by police over his time at the club.
He is understood to be speaking to officers from Police Scotland in West Lothian today.
The businessman took control at the Ibrox club in 2012 after completing a purchase of Rangers' assets and business after it went into administration and liquidation earlier that year.
Mr Green stepped down as CEO of the club the following year after it was alleged he had links with former owner Craig Whyte - a claim he denied.
Whyte has previously appeared in court charged with fraud, following an investigation into the purchase of Rangers Football Club in 2011.
He and four others who were charged with fraudulent activity linked to the sale were released on bail.