A gang of youths chased a man then punched him in the face during a dawn street robbery.
The man was walking along Cowley Road, shortly after 5am on Sunday when he was confronted by three yobs near the Co-op supermarket at the corner of Divinity Road.
They chased him along the road and hit him in the face until he handed over his mobile phone.
The youths fled towards SS Mary and John Church.
Pc Alex Gill said: "This was a nasty, unprovoked attack. Luckily the man only suffered bruising under his eye and not more serious injuries.
Anyone with information should call Pc Gill on 08458 505505 or call the anonymous Crimestoppers hotline on 0800 555111.
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