The Suomen Kuvalehti reports Mika Salo is facing charges for tax fraud.
Oct.5 (GMM) F1 driver turned commentator Mika Salo spent two days in custody at the end of last month, the Finnish newspaper Suomen Kuvalehti reports.
He was reportedly arrested at Helsinki-Vantaa airport after returning from the recent Singapore Grand Prix.
An official said: "The suspects deny committing any crime."
Salo would not comment.