Police are appealing for witnesses after an affray that took place in Amwell End on Wednesday 19th June.
The altercation occurred around 9:45pm between a group of people on the bridge near the Saracens Head pub, before continuing into Amwell End.
Neighbourhood Sergeant Michael Clark said: "At this moment in time no one has come forward to report any injuries but we are keen to trace those involved in the incident, especially as there has been suggestion that weapons may have been used. If you saw what happened, or have any information, please get in touch."
Anyone with information should contact Sergeant Clark via email or by calling the non-emergency number 101, quoting crime number 41/56007/19.