Oil tanker was seized while on its way to Yemeni port of Aden . A Yemeni oil tanker hijacked in the Gulf of Aden was freed Monday and 11 Somali pirates were arrested , Yemen 's official news agency said . Three Yemeni marines were wounded , two pirates died in the operation . Piracy is a major problem in the waters off Somalia . Somalia has not had a stable government in place since independence .
Oil tanker was seized while on its way to Yemeni port of Aden . Three Yemeni marines were wounded , two pirates died in the operation . Piracy is a major problem in the waters off Somalia . Somalia has not had a stable government in place since independence .