A group of Somali pirates have hijacked a Bangladeshi-flagged ship in the Indian Ocean and threatened to kill the sailors taken hostage unless they are paid ransom, according to the private shipping company. The Bangladeshi-flagged vessel, MV Abdullah, was headed to the United Arab Emirates from Mozambique when it was attacked by the pirates in the Indian Ocean on Tuesday. There were 23 crew members on board, said Mizanul Islam, the spokesman of the company, SR Shipping Limited, which operates the bulk commodity cargo ship. The ship was carrying coal, he added. “All the crew members aboard are…