TROUBLE erupted at an N Dubz concert as police and security battled to quell fighting in the crowd.

Concertgoers were seen pinned to the floor and brawls were reported shortly before the Noughties band took to the stage.

Frontman Dappy even pleaded for fans to “stop f****** fighting” midway during the group’s set as security tackled the incident.

One concertgoer said: “As the last warmup act took the stage before N Dubz, it was chaos.

The Argus: Dappy pleading with fans at the concertDappy pleading with fans at the concert (Image: The Argus)

“Police were rolling around on the floor with one person near the beer tent as onlookers screamed and shouted like a pack of hyenas.

“Huge groups of security members could be seen dashing towards another situation developing elsewhere in the festival.

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“The fighting must have continued until well into the set as Dappy pleaded with people to ‘stop f****** fighting’ himself in between one of the songs.”

Police officers were seen dashing around the site while marked cars were spotted at the exit after emergency services were called to the scene.

Security teams also appeared to hold two people to the floor.

N Dubz were playing their open-air gig in Stanmer Park as part of the Brighton Valley Concert Series which saw Tom Jones, Paulo Nutini and Nile Rodgers also playing last week.

The Argus: Two people pinned to the floor at the concertTwo people pinned to the floor at the concert (Image: The Argus)

Another concert attendee said: “Security guards and police officers were running all over the place, standing on the barricades and sprinting backstage.

“It wasn't long before someone was on the ground near the toilets with a lot of police officers and security guards around them.

When I left there were loads of police cars and officers. I wonder whether there was more that I didn't see.”

Brighton Valley Concert Series and Sussex Police were approached for comment.