The US Coast Guard seized 660lb of illegal fish on a boat off the coast of Texas on 12 July.<br /><br />A coastguard boat crew intercepted four Mexican fishermen found illegally fishing off southern Texas.<br /><br />The vessel was found eight miles north of the Maritime Boundary Line, authorities said. It was carrying one shark, 660lb of red snapper, as well as long lines, high flyers, a GPS and a radio.<br /><br />The coastguard has detained the anglers and turned them over to border enforcement agents.