Eleven people have been arrested on suspicion of violent disorder in Torfaen on Sunday 23 May.
Police are continuing to investigate after reports of a group of youths armed with weapons.
Armed police attended the scene at the Wern Road area of Sebastopol on Sunday afternoon.
All those arrested are boys aged between 13 and 18.
They have since been released on police bail with stringent conditions.
Torfaen Inspector Aled George said: “High-visibility patrols have increased in the area to provide reassurance. This includes along the canal path between Pontypool and Cwmbran.
“Enquiries are ongoing to identify all of those involved and we would urge anyone with any information or CCTV footage to come forward.
“This type of behaviour will not be tolerated by Gwent Police and we will take action against anyone intent on causing harm in our communities.”
Anyone with any information, who has not yet spoken with officers, is asked to call us on 101 quoting reference 2100179809. Alternatively, you can call Crimestoppers anonymously on 0800 555 111.