Fans in Norway got a bit too excited to see Justin Bieber yesterday!

The singer was in the capital city of Oslo yesterday to perform a surprise concert, but it almost didn't take place after thousands of rabid fans overpowered the city's police force, leading them to almost declare a state of emergency and cancel the event! That's according to Daily Mail. Even though media only announced the event 24 hours beforehand, 15,000 fans flocked to the floating stage in front of the Oslo Opera House where Biebs was set to perform.

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The frenzy leading up to the show even forced Justin to evacuate his hotel due to security fears. When the roof of the opera house went beyond capacity with people clamoring to get a view of Justin, police issued a warning for fans to not go near the event. But once that fell on deaf ears, the authorities lost control of the crowd and were forced to call for back-up. Once girls in the crowd begin fainting, police contacted Justin and told him he had to perform immediately or they would declare a state of emergency. Whoa!

Before rushing to the stage, Justin took to his Twitter account to address the crowd. "NORWAY - please listen to the police," he wrote. "I don't want anyone getting hurt. I want everything to go to plan but your safety must come first." He eventually made it to the stage to perform six songs that included four new ones, but later said the concert should have been held someplace else and blamed his record label for poor planning.

What do you think of Norway's Bieber fans?

Photos courtesy of Fame Flynet and Getty Images