Police are investigating reports that a group attacked a man and sexually assaulted a young woman on Lincoln High Street.
The early morning assaults were reportedly unprovoked, and happened near to the city’s Primark shop at around 5am on December 2.
A 29-year-old man is said to have sustained facial injuries.
A 19-year-old woman was allegedly sexually assaulted. Another woman, 20, was also present, but was not assaulted. Neither women were injured.
A viral Facebook post, believed to be linked to the attack, has been shared by a male victim’s mother revealing horrific facial injuries.
Pictures from the post show how the man’s eye is swollen and covered in bruising.
Lincolnshire Police released CCTV of three men as part of their inquiries.
Police did not specify if the men in the pictures were witnesses or suspects.
Anyone who recognises the men pictured has been urged to contact 101, quoting the reference 47 of December 2.