A man needed hospital treatment after being hit with a glass in the dance floor of Vittoria, formerly Mimosa, last weekend.
The victim, aged 24, suffered facial injuries after the attack at around 00:45 on Sunday morning (8 March). He was taken for treatment by ambulance.
A 22-year-old woman has been arrested on suspicion of grave and criminal assault. She's since been released on bail.
The force says several other people were involved in the incident that led to the assault and want to speak to anyone who saw it or intervened.
You can call police on 612612, the independent charity Crimestoppers anonymously on 0800 555 111 or via their Anonymous Online Form at Crimestoppers-uk.org.
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