Italian police have seized assets worth 800 million euros ($960 million) including luxury hotels and restaurants from a Naples property developer accused of being a key player in the Camorra mafia.
Angelo Simeoli "has been laundering dirty money in the construction business since 1980", said Colonel Roberto Prosperi of the financial police force.
Colonel Prosperi said the investigation on Mr Simeoli, who has already been placed under house arrest, was based on testimony from seven mafia turncoats.
Mr Simeoli is accused of working for three Camorra clans including the Casalesi, a widely feared group blamed for dozens of killings.
Investigators said the 65-year-old Mr Simeoli built a total of 1069 properties and bought 99 parcels of land with mafia money.
He is also accused of holding other assets abroad and the police said they had already managed to trace his bank accounts in Switzerland.