Police are searching for the driver of a small beige car which failed to stop, following a collision on the A23 near Brighton on Friday evening (July, 7).
Five cars were involved in the crash on the southbound road in Brighton.
The incident took place 400 metres north of the Mill Road roundabout and the A27, at around 6.10pm.
Police said the vehicles had been forced to swerve and had then collided with each other.
Among them, were a grey Volkswagen Scirocco driven by a 55-year-old man from Southwick, and a black Audi A4 driven by a 42-year-old woman from Hassocks.
Two people were treated at the Royal Sussex County Hospital in Brighton for minor injuries.
The 27-year-old man from Milton Keynes and 23-year-old woman from Northampton were both in a black Renault Clio which overturned during the incident.
A white Kia Sportage, driven by a 34-year-old man from Brighton, was also involved.
PC Nathan Langley, of the East Sussex roads policing unit, said:
“We’re keen to speak to the driver the small beige vehicle seen in the vicinity at the time of the crash.
“We’d also like to hear from anyone who saw what happened or who noticed the beige vehicle being driven shortly beforehand, and whom we’ve not yet spoken to.”
Anyone with information has been asked to report it via the Sussex Police website.
Alternatively, they can email [email protected] or phone 101, quoting the reference number 1222 of 07/07.