Head of investigation of the SP Police is target of operation The operation by the Public Ministry of São Paulo (MP-SP) that investigates the actions of public agents linked to the PCC arrested this Tuesday (9) a head of investigators from the Civil Police, a lawyer who worked as an intern for the MP himself and a former civil police officer expelled from the corporation. According to investigations, they would have participated in a scheme that involves leaking confidential information, extortion of those being investigated and links with a group that planned to kill a prosecutor from the Special Action Group to Combat Organized Crime (Gaeco). See who the prisoners are: Chief of researchers at Dise One of those arrested is Maurício Aparecido de Oliveira, who was head of investigators at the Narcotics Investigations Station (Dise) in Campinas (SP). He currently worked in the city's 1st Police District. According to the Public Ministry, a week before the operation that dismantled the plan to kill a Gaeco prosecutor, in August 2025, Maurício met with one of the suspects identified as responsible for carrying out the attack. Prosecutors say they found videos showing the encounter. Now, they are trying to find out whether confidential information about the investigation was passed on to the criminal group. g1 tries to locate Maurício's defense. Operation arrests former SP MP intern, head of investigators and former civil police officer suspected of being PCC infiltrators Disclosure Former Public Prosecutor's Office intern Another prisoner is a lawyer who, at the time of the facts investigated, was doing an internship at a criminal prosecutor's office at the Public Ministry in Campinas. His name was not released. According to Gaeco, he would have used access to the institution's systems and databases to locate those being investigated with high economic power and demand money in exchange for supposed protection against investigations. The suspicion is that he entered the prosecutor's office with the intention of obtaining information for this type of practice. One of the findings of the investigation emerged after analyzing the cell phone of Maurício Silveira Zambaldi, known as "Dragon". On the device, prosecutors found messages demanding R$500,000 so that information about him would not be sent to Gaeco. From these messages, investigators reached the then intern. According to the MP, he left the prosecutor's office a few weeks after operations that targeted "Dragon" and started working at a law firm in the Campinas region, which was also the target of searches this Tuesday. Former civil police officer The third prisoner is a former civil police officer who, according to the Public Ministry, helped the then intern and participated in the scheme. His name was not released. He had already been arrested in 2008 and ended up expelled from the Civil Police after being convicted of an extortion case. On that occasion, according to the Public Ministry's complaint, he and two other police officers arrested a woman being investigated for drug trafficking and demanded money from an alleged leader of the gang to release her. Investigation Operation Infiltrados is an offshoot of two operations launched last year: Operation Ready Response: launched in August, it investigated the activities of a criminal organization linked to the PCC which, among other crimes, was planning an attempt on the life of Gaeco prosecutor Amauri Silveira Filho. Operation Off White: launched on October 30, 2025 - carried out to dismantle a money laundering scheme linked to two of the most wanted drug traffickers in Brazil. Among them, one of the PCC's main free chiefs: Sérgio Luiz de Freitas (Mijão or Xixi). In addition to the three temporary arrests, ten search and seizure warrants were executed in Campinas and Cardoso (SP). A criminal police officer is also investigated and was the target of searches. VIDEOS: everything about Campinas and the region See more news about the region on g1 Campinas