Justin Bieber's visit to Norway drew such a large number of fans that the police nearly lost control and were on the verge of declaring a state of emergency in Oslo, the capital. Tens of thousands of crazy Justin Bieber fans ran to the streets, trying to mob the singer.


Now Oslo's mayor has launched an investigation as to why the event ended up being so out of control. A reported 49 teenagers were injured, with 14 taken for emergency care by ambulance.


According to TMZ, Mayor Fabian Stang said: "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."


Bieber performed a free show at the Opera House in Oslo Wednesday but had to push it back an hour due to the crazy mob. TMZ reported that an overwhelming number of fans from all over Europe showed up to the event.


Norway's police had to urge Bieber to take to Twitter to tame his wild fans.


"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," Bieber wrote on Twitter Wednesday. "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."


The show was part of his "Justin Biebr: Around The World" TV special which follows the Canadian singer on a 12-day tour of seven countries. The teenage heartthrob is set to head to Paris next.

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