Portuguese authorities say Brazil coach Luiz Felipe Scolari is the subject of a criminal investigation.
Officials won't say what the investigation is about. In Portugal, ongoing investigations fall under the country's judicial secrecy law.
The Portuguese attorney general's office says in an email to The Associated Press that the Department for Criminal Investigation and Prosecution has opened an inquiry into Scolari, but it provided no further details.
Unconfirmed reports in Brazil and the Netherlands say Scolari is suspected of tax evasion. He has denied any wrongdoing.
The Brazilian led Portugal's national soccer team from 2003-08. He will coach the Brazilian national team at the World Cup.