Detectives want to speak to this man following an 'altercation' at a garage in Warrington in which a man was seriously injured.
The victim was attacked during a disturbance on Noirthwich Road at around 4pm on Friday, February 19.
He suffered serious injuries and was taken to hospital.
He has since been discharged.
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Police say they believe the man in the CCTV image 'may be able to assist' with their investigation.
Det Con Darren Burns said: "We appreciate that a lot of time has passed since the incident but we have been working through a number of enquiries to trace those responsible.
"As part of those enquiries, we have identified a man who we believe could help us with our investigation."
Anyone with any information about the man is asked to contact Cheshire Police by calling 101 quoting IML 921223 or report it via https://www.cheshire.police.uk/ro/report