Justin Bieber says he can "connect" with fans better if they are not screaming and are acting more mature towards him.

The singer recently walked off stage at a gig in Manchester because fans wouldn't be quiet when he was talking during songs.

Speaking in the new documentary Bodyguards: Secret Lives from the Watchtower, Bieber opened up about his need for having security staff by his side. He said it gives him "space" and lets him create "boundaries.

He added: "At this point, if you're screaming and super overwhelming, it's hard for me to connect with you."

Bieber's director of security Mikey Arana meanwhile said in the documentary: "As fans have grown, they're more likely to engage [Bieber] in a conversation than to grab him and literally rip him apart.

"I remember when I first started with him – it may sound crazy, but three, four [emotional] little girls – they have so much strength that they would literally rip his shirt, take off his hoodie. And if it's a big crowd, you could lose him in the crowd...But as the fans have grown with him, so has their approach to be able to just come up to him and go, 'Hey Justin, how are you?' and engage in conversation."

Manager Scooter Braun added: "I think we started realising we needed security when thousands of people started showing up at radio stations. Then we went to Australia, and we told the Australians at this Sunrise TV show that we were going to need more security, and they didn't believe us, and then the kids rioted the streets."

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