A man suffered serious head injuries after he was assaulted in York.
Police were called to Burnholme Drive in the Heworth area of the city at 11.15pm on Friday to reports of a man with serious injuries.
The man, in his forties, had been assaulted and sustained serious head injuries. He was taken to Leeds General Infirmary.
North Yorkshire Police have been conducting house-to-house enquiries and searches in the area.
Anyone with any information is asked to phone 101, select option 2 and ask for York Serious Crime Team. Alternatively, call Crimestoppers anonymously on 0800 555 111. Quote reference number 12160145406.