Australian Federal Police (AFP) agents have arrested a ships Master in Gladstone following allegations that he had operated a ship in a protected zone within the Great Barrier Reef. On April 12, 2004, a private vessel operator allegedly saw the ship in the protected zone and reported it to Gladstone Vessel Traffic Service. The Great Barrier Reef Marine Park Authority (GBRMPA) was alerted to the sighting and they in turn advised the AFP. About 2:00 pm on April 14, federal agents and GBRMPA officers boarded the 17,000 ton bulk alumina carrier when it berthed at Gladstone. Federal agents will allege the ship was operated in the Capricorn Bunker Group area between Fitzroy Reef and Lamont Reef on or about 12 April 2004. The particular area of ocean is zoned General Use 'B'.