Washington, Mar h 05: Justin Bieber was booed by his young fans after he arrived almost two hours late at a London concert on Monday.
Bieber's fans, who expected the singer to hit the stage at the O2 Arena at 8.30pm, took to Twitter to express their frustration, Contactmusic reported.
One tweeted: "Someone needs to buy Justin Bieber an alarm clock - or give him a boot up the bum. 90 minutes late on stage on O2 on a school night... poor."
Another fan added: "Think of the children... Bieber concert at the O2 due to finish in 5 minutes, he's not even on stage yet."
Although a spokesperson for the entertainment complex posted an apology on the micro blogging site, he failed to give a reason for Bieber's unpunctuality.
"Justin Bieber is now on stage and apologises for the lateness of his show," stated a post on the venue's page at 10.36pm.
Later, the O2 representative also released an apology. (ANI)