Several tourists and crew members were rescued after a diving boat capsized off the Egyptian coast in the Red Sea on Monday. Five of the 33 rescued passengers survived for 30 hours in air pockets inside the yacht before they were found.

Four bodies were recovered on Tuesday from a tourist boat which capsized off Egypt’s Red Sea coast, and rescue teams were still searching for nine missing people, the Red Sea Governorate said in a statement.

Authorities in Egypt say a luxury yacht that set off with 44 people from the Red Sea port of Ghalib for a week-long diving trip sank, with 32 rescued and 8 still missing.