15,000 fans descend on the city to catch the popstar play a special four song set

Forty-nine teenage girls have been injured at a Justin Bieber concert in Norway.

Following news that the pop singer would be playing a free, four-song set outside the Oslo Opera House last night (May 30), 15,000 fans descended upon the town, causing a host of injuries amongst fans as well as ‘crippling’ the city’s mobile phone network, according to report from Gawker.

TMZ reveals that 49 fans were injured in the ensuing mayhem in the city as fans mobbed the streets, with 14 taken away by ambulance to receive further care. A mass fainting also took place.

The Mayor of Oslo, Fabian Stang, explained to TMZ that he had to hide behind a tree to avoid being trampled by the pop singer’s dedicated fanbase. He commented: “I have already called on the Emergency Planning Agency to examine the entire event from the planning stage to its implementation. We have to find out what went wrong and why it happened.”

Concerned for the safety of his fans, Justin Bieber tweeted: “NORWAY – please listen to the police. I don’t want anyone getting hurt. I want everything to go to plan but your safety must come first…for the show to happen u must all listen to the police. we are all concerned for your safety and i want what is best for u. please listen”.

Click below to see footage of fans chasing Justin Bieber through the streets of Oslo upon leaving a local restaurant.