Rescuers have located the bodies of four divers believed to be deep inside an underwater cave in a Maldive atoll. The body of a fifth diver was recovered last week.

Italy’s Foreign Ministry said the five divers “apparently died while attempting to explore caves at a depth of 50 meters (164 feet)” in the Vaavu Atoll on Thursday.

Rescue teams in the Maldives continued recovery operations after the country’s deadliest diving accident killed five Italian divers.