( CNN ) -- A Greek owned vessel that was hijacked months ago was released Sunday , naval officials said . There was no word of whether a ransom was paid to the pirates who hijacked the vessel . The Greek-owned vessel , named the Navios Apollo , was hijacked by Somali pirates in the Gulf of Aden on December 28 , the European Union Naval Force Somalia reported . The vessel was carrying 19 crew members . The ship and all the crew members were freed Sunday and they were sailing to Oman , the naval force said .
Navios Apollo hijacked in Gulf of Aden on December 28 . - The US Navy destroyer USS Cole was attacked by terrorists off the coast of Yemen and sank killing 17 sailors. Crew members were freed Sunday and are sailing to Oman .