At 9.40pm last night an altercation took place at the Causeway Pub in Wilderspool Causeway between a 55-year-old man and another man.
The victim received serious injuries and was taken to Warrington Hospital to be treated.
The offender is described as white, 6ft tall, heavy set with short dark hair. He was clean shaven and was wearing a beige check shirt. He was associating with a larger group of men prior to the incident.
DC Darren Burns said: “I would urge anyone with information to contact police so that we can find the person responsible.”
Anyone with information should contact Cheshire Police on 101 or via https://www.cheshire.police.uk/contact/general-enquiries/ quoting IML 277236.
Alternatively information can be given anonymously by contacting Crimestoppers on 08000 555 111.