Portuguese authorities are investigating Brazil's national football coach Luiz Felipe Scolari for tax fraud, less than a month before the start of the World Cup.
Scolari has strongly denied any wrongdoing as he prepares Brazil to host the tournament which starts June 12.
Prosecution sources are reported to have said Scolari was suspected of failing to declare 7 million euros in income when he was Portugal's coach between 2003 and 2008.
Scolari coached Brazil to their World Cup triumph in 2002 and has returned to the national side for the campaign they are hosting when they are again huge favourites.
Portugal has asked the US authorities for assistance in the inquiry as the money was believed to have been transferred to the United States.
Scolari has said in a statement he has always declared his earnings in all the countries he's worked in.