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West Midlands Police are probing a serious attack at a Birmingham city centre nightclub.
The victim was punched, knocked to the floor and hit repeatedly at a venue on Broad Street on August 24.
He suffered nasty injuries to his face.
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Officers want to trace a man pictured in a CCTV image about the incident.
He is described as white, tall, with a large muscular build, and in his late 30s or early 40s.
No arrests have been made and police inquiries continue.
In a statement, police said: "Do you recognise this man?
"We're looking to speak to him following a serious assault in Birmingham .
"On the evening of 24 August, a man was inside a nightclub in Broad Street when he was as