Financial police have raided the Italian soccer federation and Napoli club offices to seize documents that involve the buying and selling of players and relations with agents.

Italian media are reporting that police carried out the raids at federation headquarters in Rome and at Napoli's training center in Castelvolturno on the order of Naples prosecutors.

Reports say police confiscated balance sheets, player contracts, agent relations and other documents.

The scope of the inquiry was not immediately clear.

Through six rounds, Napoli is tied for the Serie A lead with Juventus. The southern club visits PSV Eindhoven in the Europa League on Thursday.