Phases of Operation Car Wash
A long series of criminal investigations have occurred in Brazil associated with Operation Car Wash. The first investigation was launched in March 2014, and is now known as phase 1 of the investigation, with subsequent inquiries numbered sequentially and having code names such as phase 2 (Operation Bidone), phase 3 (Operation Casablanca), and so on.
Source: Wikipedia — Phases of Operation Car Wash (CC BY-SA 4.0)