Officers from Hampshire Constablary are investigating the death of a 26-year-old man from Wolverhampton following a report of serious assault at a home on Salisbury Road last night (August 25).
The incident happened at 7.45pm. The man was transported to hospital but was pronounced dead on arrival.
A 26-year-old man has been arrested on suspicion of murder.
A 15-year-old boy and a 42-year-old man have been arrested on suspicion of assisting an offender.
Officers remain at the scene today carrying out enquiries.
Anyone with information is asked to call 101 and quote Operation Rosette or 44180322708.
Alternatively, call Crimestoppers on 0800 555 111.
The incident is being referred to the IPPC