DUBAI, Jan 4 (Reuters) - British maritime security firm Ambrey said on Thursday that a Liberia-flagged bulk carrier had reportedly been boarded by armed individuals 458 metres southeast of Eyl, Somalia. The vessel was destined for Khalifa bin Salman in Bahrain, according to Ambrey's statement. (Reporting by Clauda Tanios and Enas Alashray; Writing by Tala Ramadan; Editing by Jan Harvey)