The European Union anti-piracy mission said today that Somali pirates have launched their deepest attack into the Indian Ocean, firing rocket propelled grenades at a Hong Kong-flagged oil tanker. The tanker, the BW Lion, managed to escape the attackers and suffered no casualties during the incident today, some 400 nautical miles northeast of the Seychelles and 1,000 nautical miles east of the Somali capital Mogadishu. An EU spotter plane has been sent to hunt for the pirates.