A 42-year-old Whitby man was hit in the side of the head with a glass at the Star Inn on Haggersgate on May 13.
A 22-year-old Saltburn was arrested and later bailed in connection with the assault, which saw the victim require medical attention after suffering cuts to his ear.
The incident took place between 12am-12.30am and Whitby Police are appealing for information to get in touch,
Anyone who can assist with this investigation should call, select option 2 and ask for Matt Rogers. Alternatively, information can be emailed to email@example.com.
Or call Crimestoppers anonymously on 0800 555111, quoting reference number 12140075925.