A 21-year-old man from Lincoln is being treated for a head injury after he was assaulted on Lincoln High Street.
The incident was reported to police at 3.37am on Wednesday, January 28 and is thought to have happened on Lincoln High Street close to Carluccio’s restaurant.
Four men from Skegness, two aged 20 and two aged 22, have been arrested on suspicion of grievous bodily harm and are currently in police custody where they will be interviewed in due course.
The man is currently being treated at Queen’s Medical Centre in Nottingham.
Police were on the scene on Wednesday morning as investigations continue through the day.
Anyone who may have seen or heard anything in relation the incident, or anyone who has any information they think is relevant, is asked to contact Lincolnshire Police on 101 quoting incident 32 of January 28.
Alternatively, people can contact the independent charity Crimestoppers anonymously on 0800 555 111.