On 4 March 2016, as part of "Operation Car Wash", Brazilian authorities raided Lula's home. After the raid, the police detained Lula for questioning. A police statement alleged that Lula had collaborated in illegal bribes from the oil company Petrobras to benefit his political party and presidential campaign. Prosecutor Carlos Fernando said, "The favors to Lula from big construction companies involved in the fraud at Petrobras were many and hard to quantify". Lula said that he and his party were being politically persecuted.