MV Andinet , part of the Ethiopian Shipping Line , was approached by two pirate skiffs Monday . The pirates were armed with AK-47s and rocket-propelled grenades ( RPG's ) which they used to board MV Andinet's vessel in international waters off Somalia. Warships from international anti-piracy task force gave chase but only found empty skiff .
MV Andinet , part of the Ethiopian Shipping Line , was approached by two pirate skiffs Monday . Crew used anti-piracy measures -- including firing flares and evasive maneuvering -- to repel pirates . Warships from international anti-piracy task force gave chase but only found empty skiff .