Thames Valley Police is urgently appealing for the public’s help in tracing a man in relation to a serious injury collision in Summertown.

At 8.16am on Monday (November 4), a 17-year-old boy was riding his bicycle on Banbury Road, Summertown, between the junctions of Beechcroft Road and Oakthorpe Road, when he was involved in a collision with a motorcycle.

The rider of the motorcycle allegedly left the scene and the boy sustained life-threatening injuries.

He remains in hospital in a serious, but stable condition.

Officers are today (November 8) appealing for the public’s help in tracing Nazim Kacem, who is 29-years-old, as it’s believed he may have vital information relating to the incident.

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Police say Kacem is from Oxford, but is also known to frequent Bristol and Crouch Hill in London.

Senior Investigating Officer Detective Inspector Justin Thomas of the Serious Collision Investigation Unit said: “I am appealing to anybody who knows the whereabouts of Nazim Kacem to please contact Thames Valley Police.

“We would like to speak to him as a matter of urgency in relation to this collision.

“I would also like to appeal directly to Nazim to please contact us if you see this appeal.

Nazim Kacem Nazim Kacem (Image: Thames Valley Police) “You can get in touch by making a report online or by calling us on 101, quoting the reference 43240532710.

“Alternatively, if anybody knows of Nazim’s whereabouts, you can also call the independent charity Crimestoppers anonymously on 0800 555 111.

“This collision has occurred on a busy stretch of the Banbury Road in the morning rush-hour and resulted in the road being closed for much of the day on Monday.

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“I am reappealing to anybody who witnessed the incident or who may have dash-cam or CCTV footage that has captured the collision, or the moments leading up to it, to please get in touch with Thames Valley Police.”

Four people have been arrested in connection with this investigation.

A 14-year-old boy has been released without charge, while three others, a 50-year-old man, 41-year-old man and 37-year-old woman, all from Oxford, have been released under investigation.

Banbury Road was closed for hours on Monday with a police cordon in place after the crash.

It prompted city councillor Katherine Miles, who represents the Summertown ward, to emphasise the importance of Vision Zero, a plan to eliminate road deaths in Oxfordshire by 2050. 

She added: "There is a system-wide approach to address this general trend. We have a hierarchy of road users and those on foot or bike are the most vulnerable."