A 33-year-old man has been arrested after a "large group" was involved in an altercation at The Forum nightclub.
The incident took place at around 3.45am on Sunday, December 17, when the affray took place in College Lane, Hatfield.
No serious injuries were reported, but a 33-year-old man was arrested on suspicion of possession of an offensive weapon.
He has since been released on police bail whilst enquiries continue.
PC Tristan Ives said: "It is believed that the people pictured may be able to assist with our enquiries, and I am asking anyone who recognises them to please get in touch.
"If you think you know who they are, please contact me directly via email at tristan.ives@herts.police.uk.”
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Information can be reported online at www.herts.police.uk/ro/report or by calling the police's non-emergency number 101, quoting crime reference 41/100501/23.
Hertfordshire police's web chat function can be used by visiting herts.police.uk/contact.
Anonymous information can be given by contacting Crimestoppers on 0800 555 111 or via crimestoppers-uk.org.
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