A man has been arrested after an assault in town allegedly involving a knife.
Police want to speak to anyone with information about a row in a shop in New Street at lunchtime on Sunday.
It's claimed two men were shouting at each other, and one pulled out a knife.
They both ran off onto King Street, and fought again outside USC - where a punch was thrown.
Police say the men are known to each other have been identified.
One man is described as 6 foot tall wearing a cap with tattoos on his neck and face. The second man is described as being around 6 foot tall wearing a blue puffa coat carrying a blue rucksack with distinctive green straps.
The two men then walked away in separate directions, one of which walked down Don Street.
Anyone with any information is asked to contact police on 612612 or the independent charity Crimestoppers anonymously on 0800 555 111 or via their Anonymous Online Form at Crimestoppers-uk.org