A landlady and her partner were assaulted at the weekend.
Police said a "known man" assaulted both the landlady and her partner in the pub around 11.40pm on Saturday.
Officers attended the pub on Admirals Road, Birchwood in Warrington and arrested a 48-year-old man.
He has since been released while investigations continue.
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A spokesperson for Cheshire Police said: “At 11.40pm on August 22 police were called to reports of an incident at a pub on Admirals Road, Birchwood, Warrington.
“Officers attended the scene and found that the Landlady of the premises, and her partner, had been assaulted by a known man.
“A 48-year-old man was arrested on suspicion of assault in connection with the incident.
"He has been released under investigation pending further enquiries.”
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