POLICE arrested four teenage boys in Mangotsfield after a group armed with what one witness described as a “machete” was seen outside the shops.
Firearms units were among those called to St James Place at around 4.20pm on April 28.
Eyewitness reports shared on social media described youths with a “massive knife” or “machete” running past the shops.
They went into a nearby house and police, who arrived soon afterwards, were seen breaking down the door with a battering ram.
An Avon and Somerset police spokesperson said officers were called at about 4.20pm by witnesses who reported seeing three teenage boys armed with a large knife.
The spokesperson said: “Specialist firearms units were on the scene within minutes and four boys were arrested.
“All four were arrested for affray.
“One, aged 15, was also arrested on suspicion of possessing an offensive weapon in public and possession of cannabis.
“The other three, aged 15 and 16, were also arrested on suspicion of possessing a knife in public.”
The spokesperson said one 16-year-old boy was also arrested on suspicion of possessing an electric stun gun.
She added: “Officers seized a number of knives and other weapons from a nearby address.”
All four boys were later released on police bail and officers say their enquiries into the incident continue.
They have asked witnesses or anyone who has dashcam or smart doorbell footage they think could help the investigation to call 101 and quote crime reference number 5221 091 761.
Information can also be given anonymously to Crimestoppers by calling 0800 555 111.
Targeted patrols were being carried out by police neighbourhood teams after the incident.