A 60-year-old man has been left with life-threatening injuries after he was assaulted in Barnsley.
The man was assaulted on 22 February in the Milgate Street area of Royston at around 5.05pm.
A 28-year-old man was arrested in connection with the crime, but has been released under investigation while enquiries continue.
South Yorkshire Police have released CCTV footage, and are appealing for witnesses or anyone who recognises the man pictured below.
The man pictured is believed to hold vital information about the incident.
Police have urged anyone with information to call 101 quoting incident number 692.