Materazzi described life under Benitez at Inter as like "being back at school", suggested the Spaniard had been lined-up as Jose Mourinho's successor while the Portuguese was in position and had told him to take down photographs in his locker of his former coaches.
"He's lying," Benitez said.
"Marco Materazzi is lying. He's lying, just lying. Everything that he said is a lie. Simple.
"When he was talking with Mourinho it's a lie, because nobody knew I was going to Inter, even me. It's a lie. About the pictures, it's a lie. So he's a liar."