A man in his 40s was hospitalised with multiple injuries, including to his eye, after an alleged assault in Skegness.
The man was in the Wilfred Grove area of Skegness between 4.20am and 5.30am on September 20 when he was assaulted. An attempt was also made by an unknown person to take his phone and wallet.
The man was taken to hospital and has since been discharged.
Lincolnshire Police released CCTV images on October 3 of people they would like to speak to in connection with the incident.
The force believes they may have witnessed this incident or be able to assist with the investigation.
Anyone with information should contact Lincolnshire Police on 101 or via email at [email protected] quoting reference number 19000502268.
It can also be reported through the independent charity Crimestoppers anonymously on 0800 555 111 or online here.