It follows a report made to police shortly after 8pm on November 16 of a crash involving a car and pedestrian in the car park of Gallions Reach Health Centre.
At the scene, a 17-year-old boy was found suffering life-threatening injuries and was taken to hospital.
A 16-year-old boy was arrested on suspicion of causing injury by dangerous driving, driving without insurance, driving without a licence, and theft of a motor vehicle.
He has since been released on police bail.
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The 17-year-old victim remains in hospital receiving treatment.
His condition remains unclear at this stage.
Enquiries continue. If you saw anything or have information that could help police, please call 101 quoting CAD 6506/16Nov.
