The alleged assault took place at around 00:50 on Friday 20 December.
Anyone with information is asked to contact PC 123 Cusack on 725111 or Crimestoppers anonymously on 0800 555 111.
Pictured top: The assault happened in Folies Nightclub in Town.
Head-butted on the dance floor
Guernsey Police are looking to speak with anyone who saw a man head-butt another man on the dance floor at Les Folies D’Amour Nightclub.
