A 23-year-old man has died after falling from a hotel balcony at the Butlins holiday resort in Bognor Regis.
Police and ambulance crews arrived at the West Sussex complex in the early hours of Saturday morning after receiving reports of the fall.
Paramedics attempted to resuscitate him, but he was declared dead at the scene.
The man has been identified as Timothy Wall, of St Leonards, Dorset.
A Sussex Police spokesman said: "The death is being treated as unexplained but it is not being considered as suspicious."
A post-mortem will now take place.