The incident happened at the fried chicken restaurant based in Peel Street, Barnsley, on Saturday, June 24, at 6.30pm.
In a statement, South Yorkshire Police said: "It was reported that the two men became involved in an unprovoked confrontation with another man and assaulted him causing minor injuries to his elbow.
"Police believe the two individuals pictured could hold information useful to the investigation and ask anyone who recognises them to get in touch."
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