Potenza, November 9 - Basilicata Deputy Governor Agatino Mancusi quit on Friday after being put under investigation by prosecutors in the southern city of Potenza for alleged mafia association. Mancusi, who was also the infrastructure executive councillor in the regional government, expressed "amazement and profound bitterness" about the probe and said he had "always acted with total morality". The politician, who is a member of the centrist UDC party, said he resigned out of "respect for the institutions". According to local press reports, the probe revolves around allegations Mancusi made contact with members of organised crime gangs in order to have help in an election campaign several years ago. Basilicata Governor Vito De Filippo said he was confident his deputy would clear his name. "Certain that Basilicata will be able to continue to count on his effective contribution, I give Agatino Mancusi my sincere best wishes, confident that he will be able to clarify the unbelievable affair he has been linked to in the shortest possible time," said De Filippo, a member of the centre-left Democratic Party. A series of corruption scandals has hit parties on many parts of Italy's political spectrum in recent months. Two of these caused regional administrations led by ex-premier Silvio Berlusconi's People of Freedom (PdL) party to collapse in Lazio and Lombardy.