Egyptian officials say 185 people are known dead, while more than 230 survivors have been pulled from the Red Sea after a ferry sank there overnight.
As rescue efforts continue, Egyptian officials have ordered an investigation into the sinking. A government spokesman said the speed at which the ferry sank and the lack of sufficient life rafts suggest there were safety violations.
The boat was carrying at least 13-hundred passengers. Most were Egyptians who work in Saudi Arabia and were traveling home.
Officials say the ship disappeared from radar screens shortly after sailing from the Saudi port of Dubah late Thursday. The ferry was destined for Egypt's port of Safaga.
Egypt sent several rescue ships to the area. The U.S. Navy's Fifth Fleet based in Bahrain is sending a (P3-Orion) maritime patrol aircraft to assist the rescue and recovery effort.
It was not immediately clear what caused the ferry to sink. Officials say severe weather and high seas could have been a factor.