Rome, February 15 - Antonio Fiumefreddo, the head of Sicilian tax-arrears agency Riscossione Sicilia, said Wednesday that all public tender contracts in the southern region do not comply with the law. "We have reported the irregularity of all Sicilian contracts to (anti-corruption agency) ANAC," Fiumefreddo told parliament's anti-mafia commission. He said that this was due to abuse of self-certification in the contracts. According to Fiumefreddo, some 52 billion euros had not been collected over the last 10 years. Fiumefreddo added that Sicilian oil extraction companies had "never been asked to pay taxes" and said that the agency had had disputes "running into millions of euros" with some regional parliament members.