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Justin Bieber avoided a near riot at his gig in Loverpool.
There were fears that an appearance from the singer on the Hard Days Night Hotel balcony would start a riot.
He Tweeted: 'This is crazy. There are, like, thousands of people out there. Love everybody, but gonna try and get some sleep. Please don't scream.'
Later he wrote: 'Trying to work it out so I can say whatup to my fans.'
After successfully going just that he Tweeted: 'That was great! got to say hi to everyone. we are following the rules'