A 20-year-old man from Nadur is in a critical condition after falling from a height of about a storey during carnival celebrations in his home town.
The police said the man was enjoying the celebrations with his friends on a carnival float.
He was given first aid by some people and the police before being taken to the Gozo General Hospital in a Red Cross ambulance.
As he was certified to be in danger of losing his life, he was transferred to Mater Dei by helicopter.
An inquiry is being held.