Ángel María Villar, the Chairman of the Spanish Royal Football Federation—the RFEF, Spain's FA—has been jailed on remand by an investigating judge at the National High Court in Madrid, several Spanish media outlets reported on Thursday evening.
The public prosecutor had requested that Mr. Villar, who is also a FIFA Vice-President, be imprisoned awaiting trial.
His son, a sports lawyer, has also been jailed.
They do not have the option of paying bail.
He has been Chairman of the RFEF since 1988.
Four people were arrested during a Civil Guard operation on Tuesday, and all four have answered the investigating judge's questions today, having remained in custody in the intervening 48 hours.
The investigation centres on "the organising of matches between the Spanish national side and other national sides, thus receiving compensation for services and other commercial relations".