Police were called to The Grove at the junction with Great Eastern Road just before 12.20pm this afternoon (March 15).
A car had collided with a pedestrian in the road. He was subsequently rushed to hospital where he remains.
His condition is not known at this time, a police spokesperson confirmed.
They added that the driver left the scene before police arrived, and that enquiries are ongoing to trace them.
A police cordon remains in place, forcing the detour of bus routes 69 and 257.
Anyone with information is asked to call police on101 quoting reference CAD 2909/15March.