Spain's Guardia Civil is looking into allegations of financial irregularities, and Rubiales insists the FA will collaborate fully with inquiries
The president of the Royal Spanish Football Association (RFEF) has promised full cooperation with authorities during an investigation into alleged corruption.
On Tuesday, the Guardia Civil requested documents from the Catalan Football Federation (FCF) to assist with their probe into financial irregularities within areas of Spanish football's governing bodies.
According to La Republica Esportiva, two high-ranking officials were arrested by the Guardia Civil as part of the investigation, known as Operation Soule. The Spanish police force did not immediately respond to a request for comment when contacted by Omnisport.