Three men, believed to be one 18-year-old and two 19-year-olds, have been left with potentially life-changing injuries after falling 70ft down a cliff near the Cornish village of Porthleven.
Crews from HM Coastguard received a call just after midnight on Sunday 5 May from a man saying he and two others had fallen down a cliff and needed help.
The Coastguard helicopter located the three after one of the injured used the torch on his mobile phone to help identify their exact location.
The men were then airlifted to Plymouth's Derriford hospital where they remain with potentially life changing injuries.
Devon and Cornwall police were also called to Parc Trammel Cove to assist the ambulance and coastguard.
The Cornish three-day festival The Masked Ball also took place over the weekend in Porthleven, near to where the incident happened.
None of the men were wearing festival wristbands.
In a statement on the festival's Facebook site, they said, "The Masked Ball is aware of an incident that took place last night [Saturday] around midnight near the site involving 3 casualties. Our thoughts are with those people and we are determining further details surrounding the incident with the relevant authorities. Xxx"
The three men have sustained multiple serious injuries, described as potentially life-threatening or changing and their families have been informed.
The police are appealing for witnesses.