Police are appealing for witnesses to a confrontation between two drivers at the Chain Bar roundabout.
The incident happened just before midday on Wednesday May 8.
Police say it was alleged that the driver of a blue Scania truck cut off a blue Fiat 126 and got out of his vehicle.
A confrontation between the two drivers followed.
Any independent witnesses or anyone with information can contact PC Lena Horner on the non emergency number 101.