A 21-year-old man has been discovered unconscious in a car park in Aberdeen.
He was found in Kidd Street at around 5am on Sunday and was taken to Aberdeen Royal Infirmary by ambulance.
Police have said it is unclear how he suffered his injuries and are appealing for anyone who saw someone fitting his description walking on Chapel Street or Kidd Street between 2am and 5am to come forward.
He is of average build and was wearing a dark Superdry hooded top with lighter coloured writing, jeans and tan boots.
Anyone with information is asked to contact the police on 101 or Crimestoppers on 0800 555 111.
Probe launched after man found unconscious in Aberdeen car park