KALAMATA, Greece (AP) Rescue workers transferred the bodies of dead migrants to refrigerated trucks as a major search continued Thursday for possible survivors of a sea disaster in southern Greece. Hundreds of people are still feared missing.

At least 78 bodies have been recovered after a fishing boat crammed with migrants seeking to make it from Libya to Italy capsized and sank a day earlier in deep waters off the Greek coast.

Rescuers saved 104 passengers including Egyptians, Syrians, Pakistanis, Afghans and Palestinians, mostly men and including eight minors but authorities fear that hundreds of others may have been trapped below deck. If confirmed, that would make the tragedy one of the worst ever recorded in the central Mediterranean.

Authorities revised the confirmed death toll from 79 following an overnight count of the bodies.

The survivors are in a very difficult situation. Right now they are in shock, Erasmia Roumana, head of a United Nations Refugee Agency delegation, told The Associated Press after meeting the rescued migrants in a storage hangar in the southern port of Kalamata.