At least six tourists were killed Thursday when a submarine sank off Egypt’s Red Sea coast, according to Egyptian officials. At least five Russian tourists died, according to Russian officials in Egypt.

Two children have died after a tourist submarine with 45 Russian citizens on board sank off the coast of Egypt. The bodies of six passengers were pulled to the coast of Hurghada, a city on the Red Sea coast, after ‘Sindbad’ capsized at around 10am today.

The Russian embassy in Cairo said that four Russian citizens had been killed in the incident, with dozens aboard the submersible.