Police are investigating a confrontation between two groups where knives were wielded in the street.
Officers were called at 12.31pm on Wednesday 31 January to Weekday Cross in Nottingham city centre by members of the public.
An extensive search of the area was conducted but the suspects had left the area.
No injuries were reported.
Additional high-visibility reassurance patrols have been in place since the incident occurred as officers work to identify the young people involved.
Chief Inspector Karl Thomas, of Nottinghamshire Police, said: “I have seen the footage of this incident and share the same sense of revulsion that other viewers will feel.
“Detectives are investigating what happened as a matter of urgency and are working at speed to identify all the young people involved.
“I urge anyone who recognises them to get in touch with as soon as possible. Although incidents of this nature are rare, we fully understand the concern they cause in the community.
“I want to reassure everybody about just how seriously we are treating this incident.
“We are working every day to remove weapons from our streets and also to educate young people about the dangers of carrying them.
“Incidents of this nature underscore just how important that work is and why it is such a high priority for Nottinghamshire Police.”
Detectives have released a number of CCTV images of people they wish to trace to help them further their investigation.
If you know the people in the pictures or are the people in the pictures then contact Nottinghamshire Police immediately.
Anyone with information about this incident is asked to call 101 quoting incident 292 of 31 January 2023.