Justin Bieber  liverpool uk girls police Hard Days Night Justin Bieber  liverpool uk girls police Hard Days Night

Justin Bieber was trapped inside his hotel in Liverpool, England for several hours today, and the teen pop superstar tweeted, "I cant even say hi to my fans outside because of the police. Some bull."

Local police reportedly warned the singer that his fans could create a "possible riot situation," so he was forced to stay inside for everyone's safety. However, after some crowd control and negotiations with security, Bieber was finally able to greet his admirers, and he tweeted, "that was great! got to say hi to everyone. we are following the rules. lol. #LOVEMYFANS"

Glad no one got hurt!