But on October 5, 2015, unbeknownst to the Justice Ministry, at least 17 officials from the Justice Department, the FBI, and possibly Immigration and Customs Enforcement landed in Curitiba, the capital of the southern state of Paraná, for a four-day conference at the Operation Car Wash headquarters. Dallagnol instructed his press aide to keep the meetings under wraps, as the “Americans don’t want us to divulge things,” he advised. It is not unusual for agents to want to keep an ongoing investigation shielded from public view, but in this case, some details had already leaked to the Brazilian press.