Officers are appealing for information after a 25-year-old man was repeatedly punched in the face in an unprovoked attack.
He suffered a suspected fractured eye socket in the incident in Lancaster Road, at the junction of Astral Grove, Hucknall, at 9pm on Friday 26 January.
A spokesman from Nottinghamshire Police said: "The man was described as white, wearing all black clothing with a balaclava covering his face. The reason for the attack is not known."
Anyone who witnessed the incident or has any information is asked to call Nottinghamshire Police on 101, or Crimestoppers anonymously on 0800 555 111, quoting incident number 444 of 27 January 2018.