VARESE, Italy (AP) _ The son of a convicted mobster who is considered one of Italy's most powerful crime bosses was shot to death early Thursday in what might be a warning to his imprisoned father.

Roberto Cutolo, 28, was shot 10 times in the stomach in Tradate, news reports said. Police say his father, Raffaele, is a key leader of the Camorra, a criminal organization based in the Naples area. Investigators say the elder Cutolo continues to direct his clan's activities from his prison cell in Naples.

The father is serving a life term for convictions of various mob-linked crimes, including murder.

The Italian state television network RAI reported investigators were looking into the possibility that the son was murdered as a warning to Cutolo from rival clans dealing in drug trafficking and extortion.

The younger Cutolo had served a few years in prison for criminal association and had been granted provisional liberty while awaiting trial on charges of extortion and running a prostitution ring. Judicial authorities had ordered him to live in northern Italy and report twice a week to police.