Five Italians and a rescuer have died in the Maldives as officials launch a probe into the tragedy - two questions remain unanswered as the investigation gets underway

The group, from Italy , had set off on a diving expedition on Thursday morning to explore the Vaavu atoll but never resurfaced.

The divers became trapped in a sea cave at a depth of about 50 metres. A high-risk search for the bodies was suspended because of rough seas.