Justin Bieber Cancels Portugal Concert: "Baby" Singer Backs Out of Lisbon Show Just Days After His Paparazzi Flip Out

Justin Bieber has officially cancelled his concert set for March 12 in Portugal. The now-cancelled appearance would have been his second show in Lisbon, but he is still set to perform tonight. This has clearly been a rough week for the "Baby" singer. The last we had heard from him, he had been cursing and attempting to attack paparazzi, reportedly complaining of breathlessness and then receiving oxygen, and also showing up late for a concert at the O2 Arena in London. Reasons for his cancelling tomorrow night's show have yet to be reported, but the "Everything is New" website (promoter of the Bieber concerts) has made an official announcement:

"Due to unforeseen circumstances, Justin Bieber was forced to cancel the second performance in Portugal, March 12. The Canadian singer is eager to play for the Portuguese fans on March 11. Holders of tickets valid for March 12 should contact the respective place of purchase to receive a refund within 30 days of the date of the scheduled concert, which ends April 11."A representative of Bieber has confirmed the cancellation. The only word from the pop star has come from a Twitter post he made on Sunday:

#sundayfunday

— Justin Bieber (@justinbieber) March 10, 2013

So who knows what is going on with the Biebs. All we know right now is that this news comes as an end of a hectic week for him that could possibly turn into somewhat of a "March Madness" for Justin.

Here are some earlier tweets from the star, trying to explain his freak out last week: 

Ahhhhh! Rough morning. Trying to feel better for this show tonight but let the paps get the best of me... — Justin Bieber (@justinbieber) March 8, 2013

Sometimes when people r shoving cameras in your face all day and yelling the worst thing possible at u...well I'm human. Rough week

— Justin Bieber (@justinbieber) March 8, 2013

So who knows what is going on with the Biebs. All we know right now is that this news comes as an end of a hectic week for him that could possibly turn into somewhat of a "March Madness" for Justin.

Here are some earlier tweets from the star, trying to explain his freak out last week: 

Not gonna let them get the best of me again. Gonna get focused on this show tonight. Adrenaline is high now. Gonna put it on the stage — Justin Bieber (@justinbieber) March 8, 2013