A 34-year-old woman has been arrested on suspicion of Grave and Criminal Assault after a fight broke out on Sunday morning.
It happened just after midnight on Conway Street and involved two women and a man.
The man and one of the women sustained facial injuries.
It's understood they all know each other.
Police want to speak to anyone who saw what happened.
They can be contacted on 01534 612612 or through Crimestoppers anonymously on 0800 555 111.

New website helps children and families navigate the digital world
More time in Jersey for French day-trippers
Rapist jailed more than two decades after his crime
Jersey Airport to see 20,000 passengers in the run up to Christmas
Both winning CI Christmas Lottery Tickets sold in Jersey
Jersey churches host free Christmas events in the Royal Square
Support service set up for carers of people with mental illness
New Jersey Opera House CEO appointed