N-Dubz were forced to stop midway through their concert after fans were filming fighting between themselves while others passed on Monday evening.
The hip-hop trio - consisting of Dappy, Fazer and Tulisa Contostavlos - are in the midst of a comeback arena tour after 11 years away from the limelight, which saw their initial 10-show programme completely sell out in less than an hour.
As a result, N-Dubz added an extra 13 shows in November and December due to the popular demand as their legions of fans get to see the trio in person.
However, some fans were clearly too excited at the prospect of watching the returning band, who have hits such as I Need You, Strong Again, Playing With Fire and number one single Number 1, as fights broke out and others needed medical attention at Bournemouth International Centre on Monday.
The trio were forced to stop their gig on the south coast on several occasions due to fans scrapping amongst themselves, including one time when Dappy called security to eject a woman for her involvement in a brawl.
One fan took to Twitter about gig, writing: "Bournemouth crowds are fucking rough. Ndubz put in a decent show!"
A second wrote: "Great night in Bournemouth last night, pity about the drunks who kept fighting."
Another fan, who wished to remain anonymous, admitted it was a "horrible experience".
She told The Sun : "There were so many fights in the crowd down below and it really scared me. Security did their best to throw the trouble makers out but people were so frightened.
"N-Dubz had to keep stopping the show as some began passing out in panic and needed help from the medics. The worst was seeing people peeing on others. It was disgusting.
"I'd been looking forward to this concert for months but it ending up being a horrible experience to be there."
N-Dubz shocked their devoted fans when they release single Charmer in May - their first hit since 2011. It only lasted four weeks in the charts and peaked at number 32, but it did not stop the waves of people hunting down tickets for the Back To The Future tour.
The trio have also announced a nine-show summer tour, which kicks off at the Isle Of Wight Festival in June before visiting Brighton, Margate, Telford, Scarborough, Sunderland, Colwyn Bay, London and Cardiff between July and September.
Mirror have contacted representatives for N-Dubz and the Bournemouth arena for comment.
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