Authorities in Egypt say a luxury yacht that set off with 45 people from the Red Sea port of Ghalib for a week-long diving trip sank, with 28 rescued and 16 still missing.

CAIRO (Reuters) -Egyptian authorities rescued 28 people after a tourist boat sank off its Red Sea coast, the Red Sea Governorate said in a statement on Monday, as a search continued for the 17 remaining passengers and crew.

Two Britons are reported to be among dozens of people feared missing after a tourist yacht was “hit by a wave” and sank off the coast of Egypt on Monday. At least 16 people are feared missing despite a massive rescue operation saving 28 people from the vessel, according to the governor of the Red Sea region, Amr Hanafi.