Police are looking for three men believed to be responsible for a number of assaults in Aberdeen in the early hours.
A 47-year-old man was attacked by the men in Cairngorm Crescent, near Provost Watt Drive in Kincorth, between 0045 BST and 0115 BST.
The victim was taken to Aberdeen Royal Infirmary.
Police said the men were also believed to be responsible for further assaults on other people nearby.
Police have appealed for anyone with information about the men, all described as being in their mid 20s, to contact them.