Like any child who has lost a parent, it was only natural that Benazir Bhutto's eldest daughter would wish to express her grief for her murdered mother. Less obvious, perhaps, was that the tribute would come in the form of a mournful rap song.

It was the second time that Giovanni Venosa had been arrested for mafia links.

In a case where life appears to imitate art, Giovanni Venosa was arrested for trying to extract a "pizzo" - mafia tax - from businesses in the Caserte region to the north of Naples, Italian newspapers said.

Based on the best-selling book by Italian journalist Roberto Saviano, Gomorrah won the top prize at the Cannes film festival and is in the running for the Oscar awards.

Already sentenced two months ago to a period of community service in the north of Italy for drug-trafficking, Venosa took advantage of a Christmas break to return to Naples, where he was accused of the extortion.