A teenager has been arrested on suspicion of setting up a Facebook page to organise a mass fight between rival gangs.
The site was created after dozens of youths from Bristol descended on a carnival in the nearby village of Pill earlier this month to fight local teenagers.
It called for a revenge clash at the nearby Portishead Carnival.
The page, called ‘To Sort out this beef wiz Bristol’, featured a picture from football hooligan film Green Street.
It carried the message ”On carnival all of us meet up n have this fight cuz everyone is getting called p***ies so well sort it out innit.”
Nearly 100 teenagers from as far afield as Weston-super-Mare and Clevedon in North Somerset had already confirmed they would attend before the site was pulled down.
A 17-year-old youth from Weston-super-Mare has been arrested on suspicion of incitement to cause violent disorder and released on bail.
Inspector John Owen, of Avon and Somerset police, said: ”We are taking this incident very seriously and are warning youngsters that we will not tolerate any anti-social or violent behaviour at Portishead Carnival.
”I would like to reassure local residents that we are working hard to ensure the carnival will remain a peaceful and safe family event.”
The Facebook site was set up following clashes at the Pill Rag event on June 6 involving up to 100 youths.
One man had his ear bitten off in the violence, which is believed to have involved youths from the Shirehampton and Lawrence Weston areas of Bristol.