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Editors on stage at the Leas Cliff Hall before the fight broke out
A security review is under way at the Leas Cliff Hall after fights broke out during an Editors gig.
The band went off stage during the brawl in the audience on Tuesday night.
Drink was thrown around and one concert-goer got on the stage at the Folkestone venue and grabbed singer Tom Smith.
Those there criticised the hall security for not being able to cope.
KM Group photographer Gary Browne, who was in the audience with his 15-year-old son Cameron, said: "A small group started creating havoc with beer chucking and moshing.
"Having survived a few punk gigs including a particularly violent Clash concert it was if bit of a shock to see this at an Editors gig.
"There was a lack of security. The security guards seemed overwhelmed and it took them a while to sort it out."
Luke Yates, who was photographing the gig, echoed the lack of security line.
"Halfway through the set the bouncers started to get agitated and could be seen talking a lot on their radios, but not moving from their stations at the front," he said.
"A fight broke out over in the middle of floor by the stage in front of Russell Leech the bass player, and he actually yelled at them to stop.
"Shortly afterwards the band stopped playing and walked off."
After the troublemakers had been ejected, Editors returned.
"Right at the end of the gig a ‘fan’ got onto the stage and was able to run all the way over to Tom the lead singer and grab him," said Luke.
"The band’s roadies had to remove the person from the stage as security was yet again, unable to assist.
"The Leas’ management were extremely lucky that this did not escalate into something much worse."
Stephen Levine, the hall general manager, said: "Security were dealing with several incidents at once and when the police were called to remove the trouble makers from the scene they took 45 minutes to respond and didn’t take anyone away.
"I have been in contact with senior managers at the security firm to discuss their actions and will be meeting with them. They are conducting a review and preparing reports for me so we can take whatever steps are required to ensure this is a one off incident."