Paula David

Pop singer Justin Bieber apologized to enraged fans and their parents for showing up late for his own concert held at the O2 Arena in London.

Bieber's concert was scheduled to start at 8:30, starting with front acts by Carly Rae Jepsen and Jaden Smith. Bieber was to go on stage right after, but the audience was kept waiting for him instead.

On Twitter, the 19-year-old singer wrote, "since i have been here it hasnt been easy with the press at times but I have loved it. so let me say this...last night i was scheduled after 3 opening acts to go on stage at 935 not 830 but because of some technical issues i got on at was 40 min late to stage. there is no excuse for that and I apologize for anyone we upset."

He added, "However it was great show and Im proud of that and tonight we will run on time and look forward to putting on an amazing show for everyone in attendance."

"[M]y relationship with the media is not always easy but im trying. Im all about the music and the performance and i respect my fans."

"[I] never have any intent to upset or let anyone down. and Im not okay with things being exaggerated. once again sorry for anyone upset."

Bieber plans to make up saying, "now we have a show to do today and Im gonna focus on the positive and put on a great show tonight here in London."

He added, "NIGHT 2 at the 02 is gonna be even better. get ready. thanks"

Meanwhile, angry fans and their parents took to Twitter to vent their frustration on the pop star's lateness, considering that they all exerted effort to stay up late on a school night.

"Beiber audience deserve a 50% refund. Disgusting behaviour and lame, late apology. Fans seek legal advice," a Twitter user wrote. "[S]o who is the stupidest:Justin Bieber 4 not knowing the bedtime of his fan base or his fans for thinking he gives a [expletive]," another user tweeted.

Meanwhile, some fans were understanding of Bieber's tardiness. A user tweeted, "Justin did amazing, be thankful for him coming here & doing a concert." Another fan wrote, "he was only 40 min late but he did a great performance."

Justin Bieber Angers His Fans. The singer upsets his loyal followers by showing up nearly two hours late to his London concert.

Justin Bieber Apologizes for Late Appearance to London Concert