A 46-year-old Frenchman died on Korcula island on Tuesday night attempting to dive into a cave 30 metres underwater, Dubrovnik police said on Wednesday.

He was with another French citizen, his underage son, according to the media, who was hospitalized in Split.

Dubrovnik-Neretva County police received a report around 6 pm which said that foreign citizens on the southern island needed help. Officers established that the Frenchman was freediving on Korcula’s south side around 4 pm, attempting to dive into a cave 30 m below the sea.

Since he was not coming up, the other French citizen, who was in a rubber boat, dove after him and found him unconscious.

Police took the 46-year-old to Vela Luka, where doctors tried to revive him but failed.