In 6 BBY, an Imperial Navy task force led by Commodore Mogge intercepted the Blaster Brethren pirate fleet, commanded by the Mandalorian warrior Naastau, above the planet of Harloen where the pirates intended to sell loot from a recent raid. The pirates were defeated with only two vessels remaining and its captain, Naastau, as one of the last remaining Blaster Brothers who wasn't killed or captured. Prior to the operation, Mogge had spent several months working with elements of the Imperial Security Bureau to bring the Blaster Brethren down.