Somali pirates hijacked an oil products tanker off Yemen, a Somali maritime security official said, the latest in a resurgence of piracy that has seen six commercial vessels seized since April across the Gulf of Aden and western Indian Ocean.Six armed pirates hijacked the Eritrean-flagged M.T. Sibu 1 on Thursday about 136 nautical miles (252 kilometres) east of al-Mukalla, Yemen, and took it towards Somalia’s Puntland coast, the official, who has knowledge of the incident, told journalists on...