In the year 21 BBY, the Prosecutor was on patrol in the Corellian sector, safeguarding the trade routes, when the ship picked up Separatist communications. Subsequently, Trandoshans launched an assault, seizing control before a distress call could be transmitted. Following a fortnight of radio silence with the Republic, the vessel resurfaced in the Corbantis system within the Chaykin Cluster. Given the significant number of clones present, some managed to endure until the Republic dispatched a clone commandos unit, specifically Delta Squad, to investigate the situation.