Two people have been arrested on suspicion of grievous bodily harm with intent after an incident in Ventnor today (Sunday).
Police officers were called to Alpine Road at 1.44pm.
A 39-year-old man has been taken to hospital with a head injury.
A 23-year-old man and a 22-year-old woman have been detained, says Hampshire Constabulary.
The force says it has launched an investigation, but is treating it as an isolated incident.
If you have any information, call police on 101, quoting the crime reference number 44190180846.