The driver of a car is being sought by police as a potential witness to a fatal crash.

Officers are appealing for the motorist in a silver Ford Galaxy, pictured, to come forward.

The driver is believed to have turned right out of Skew Road and onto Portsdown Hill Road shortly before the collision on August 13 occurred.

Do you know the owner of this car?Do you know the owner of this car? (Image: Hampshire & Isle of Wight Constabulary)

Police were called by the ambulance service to the scene of the crash, which involved a silver Honda Jazz and a cyclist.

The cyclist, 16-year-old Ethan Wilkie from Portsmouth, later passed away in hospital.

A spokesperson from Hampshire Constabulary said: “If you were the driver of the silver Ford Galaxy, or you know who they are, please call 101 and quote incident number 44240347160.

“You can also contact us via the Hampshire & Isle of Wight Constabulary website.

“Alternatively, you can call Crimestoppers, anonymously, on 0800 555 111, or via their website.

“We’d also still like to hear from any other witnesses to the collision, or anyone who has any footage of the incident, including dash cam.”

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As previously reported, an 18-year-old man from Gosport was arrested on suspicion of causing serious injury by dangerous driving and drug driving.

He has now been released on bail until September 12 while police enquiries continue.

Officers also arrested a 17-year-old man from Lee-on-the-Solent on suspicion of causing serious injury by dangerous driving.

Following police enquiries he has since been released with no further action taken against him.