Five Italians have died in a scuba diving accident in the Maldives, the foreign ministry in Rome has said.
"The divers are believed to have died while attempting to explore caves at a depth of 50 metres (164ft)," the ministry said, adding that this happened in Vaavu Atoll.
The Maldives' military said one body had been found in a cave about 60 metres underwater, and the other four divers were believed to be also there.
It said divers with special equipment had been sent to the area, describing a search operation as a very high risk.
The incident is believed to be the worst single diving accident in the tiny Indian Ocean nation, a popular tourist destination because of its string of coral islands.
The five Italians entered the water on Thursday morning, local media reported.
The crew of the diving vessel they were travelling on reported them missing when they failed to resurface later on.
Police said the weather was rough in the area, about 100km (62 miles) south of the capital Malé. A yellow warning was issued for passenger boats and fishermen.
The University of Genoa later said the victims included a marine biology professor, her daughter and two young researchers.
In a statement on X, the university expressed its "deepest condolences" to the victims.
Diving and snorkelling accidents are relatively rare in the Maldives, although several fatalities have been reported in recent years.
Last December, an experienced British female diver drowned in a scuba incident off the island resort of Ellaidhoo. Her husband died five days later after falling ill.
In 2024, a Japanese lawmaker died while snorkelling in Lhaviyani Atoll.
