Gallura, a 50-year-old diver dies during a dive: he was working at a buoy field.

The Tempio Pausania Prosecutor's Office has opened an investigation into the death of a 50-year-old diver from Sassari.

The man, an employee of a specialized company, was working at a buoy field in Santa Teresa Gallura when, for reasons yet to be ascertained, he felt ill.

After the rescue, the man was brought to shore and given CPR. A rescue helicopter also arrived on the scene, but attempts to save his life were unsuccessful.

The Coast Guard is investigating the case and has seized the equipment used for the dive.

An autopsy will likely be ordered to shed light on the cause of death.