A 38-year-old woman needed surgery at the Royal United Hospital in Bath after an assault in Trowbridge on Saturday, December 22.
Police know of four others who were injured in the fight, which happened between the White Swan pub and The Pig club in Church Street just before midnight.
A 19-year-old man has been arrested and is on police bail. Police also want to speak to an 18-year-old man about the attack.
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