The man who died following a serious assault in Mapperley Park in the early hours of Friday morning (14 April 2017) has been named as Matthew Rothery.
Officers were called to an address in Woodbrough Road just before 1am, the 18-year-old was taken to Queens Medical Centre but died shortly afterwards.
The family have released this image of him but have asked for privacy at this time.
Detectives continue to investigate and are following up several lines of inquiry.
If anyone has any information that can help, please contact Nottinghamshire Police on 101 quoting incident 31 of 14 April. You can also contact Crimestoppers completely anonymously on 0800 555 111.