Justin Bieber has thanked his fans for their support following what he called his "worst birthday".
The pop sensation celebrated his 19th on Friday night, but his big bash at London nightclub Cirque Du Soir came to an early end.
It was reported that some members of Justin's group were under-age and were refused entry, although conflicting reports suggested the star left the nightspot due to paparazzi.
Justin tweeted after the event that it was his "worst birthday", and later responded to messages of support from fans by saying: "I see and saw all the posts from around the world. U got me smiling. Love u. Thank u. #beliebers."
The Boyfriend singer also posted a message on Instagram to clarify what happened.
He denied attempting to take somebody who was under-age into the club, and continued: "I love how the club wanted to give the press another reason to why we didn't stay at their weak a** club so they wouldn't look bad for me walking in and right back out... i said m "worst bday" but that was due to dummies pushing over my fans and being overly aggressive. Btw it wasn't the worst bday cuz all my friends from back home flew in I was just mad in the moment."
A spokesperson for the club told E! News: "We, like all clubs in London, operate a strict age policy. As a few of the members of the party were under the suitable age of 18, the security team at Cirque Du Soir, London, clearly explained this rule and refused entry to the club for anyone who could not provide us with adequate proof of age."