It’s alleged two men were seen fighting at the lower end of Whitcombe Road near the junction with Whitepit Lane at around 7.30am on Monday (25th June).
A 38-year-old man from the Isle of Wight received injuries, which were not life-threatening. The other man was described as white and aged in his 60s.
The cars involved were a silver Ford Mondeo and a gold Volvo estate.
Police received a 999 call from a woman who reported the fight.
This female driver or any other witnesses are asked to contact PC Martin Egerton at Newport police station by phoning 101.
Mini-com users can phone 01962 875000. Information can be given anonymously by phoning the independent Crimestoppers charity on 0800 555 111.