OMAN has identified the Panama-flagged Asphalt Princess as the tanker involved in a hijacking which Britain's maritime trade agency earlier said was over. The statement by Oman's Maritime Security Centre was the first official confirmation of Tuesday's incident in the Arabian Sea which maritime security sources had told Reuters involved suspected Iranian-backed forces. Iran denied any involvement. The United Kingdom Maritime Trade Operations (UKMTO) said in a warning notice based on a third-party source on Wednesday that people who had boarded a tanker involved in a "potential hijack" had since left and that the vessel, which it did not identify,…