A man was found with a fractured skull after he was reported to have been attacked by a group of strangers. 

He was discovered at about 10pm on Sunday (May 14) in Slade Close in Headington. 

The injured man reported to the ambulance crew that he had been attacked by eight men. 

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It is reported that the offenders were travelling in three vehicles.

These were a small red vehicle, possibly a Vauxhall Corsa, a black vehicle, possibly an Audi A3 or a similar type car, and another small black vehicle.

Those with relevant information are urged to contact Thames Valley Police via its website or by calling 101, quoting the investigation reference number 43230211069.