We were called just after 4am on 8 May to reports of a man at Winchester Train Station with a serious injury to his head and stomach.
It is believed he was assaulted by a group of three to four men at some point between 10pm and 11pm on Friday, 7 May, at an address on Highcliffe Road.
The victim, a 21-year-old man from Basingstoke, is in hospital being treated for his injuries. They are considered life changing but not life threatening at this time.
We have conducted a number of enquiries and are now turning to the public for any information that could assist with our investigation.
Were you in the area at the time? Did you see the incident or the victim in the area? Perhaps you have dash cam footage from the area between Highcliffe Road and Winchester Train Station between 10pm and 4am?
We are particularly keen to hear from anyone who witnessed the victim walking between Highcliffe Road and the station.
He is described as a white man in his early 20s, with close cropped hair and a short beard.
He was wearing a blue jacket with a white collar and black buttons, a long sleeved grey t-shirt, blue jeans, and a dark brown belt. He also wore dark grey trainers with white laces and white soles.
Anyone with information is asked to phone 101 with reference 44210176849. Alternatively, you can call Crimestoppers 100% anonymously on 0800 555 111.