An elderly man was critically injured when he fell from the promenade onto the rocks at the seashore of Qui-Si-Sana on Sunday.
The police said the accident happened at about 7.15pm.
The man was given assistance by passers-by until an ambulance arrived.
The man's identity was not immediately known to the police. No foul play is suspected.
The area of the accident was still cordoned off on Monday morning.