Egyptian officials say a submarine tourist vessel with 45 passengers and 5 crew sank off the country's popular Red Sea coast, killing at least six people.

The Red Sea Governorate said the submarine had 50 people on board, 45 tourists and five crew, Reuters reported. The tourists were of nationalities including Russia, India, Norway and Sweden, Reuters said.

Six Russians died on Thursday and 39 foreign tourists were rescued when a viewing submarine sank off the Egyptian Red Sea resort of Hurghada, the local governor's office said on Facebook, adding that no passengers or crew were still missing.