The man may have more information about what happened.
Police investigating an assault in a Bradford nightclub have issued an image of a man they would like to identify.
The incident occurred at around 6am on 1 January and saw an 18-year-old male attend hospital for treatment for a serious facial injury.
Following extensive enquiries police have now released an image of a male who may have more information about what happened.
Anyone who recognises the man is asked to contact Bradford District CID on 101, quoting crime reference 13180008766.
Information can also be reported anonymously to the independent charity Crimestoppers on 0800 555 111.