Troubled star Justin Bieber has blamed his recent meltdown on his hectic schedule, insisting gruelling workouts, homesickness, and the strain of live performances took a toll on him.
The 'Boyfriend' hitmaker hit headlines on Friday when he was filmed in a foul-mouthed clash with a paparazzo in the UK capital, reported Contactmusic.
The incident came after days Bieber being criticised for turning up late for his opening gig at London's O2 Arena and had a bust-up with bouncers at a nightclub as he celebrated his 19th birthday on few days earlier.
His 10-day trip to Britain ended in chaos and controversy on Friday when Bieber was caught on camera threatening to "beat" a snapper outside his London hotel.
But the Canadian star has now spoken out, blaming his behaviour on a "hard" few days.
"It was a hard week. I was working out every morning and had a huge show every night. When people are pushing their camera in your face all day long and yell mean things at you (it's hard). I'm only human, too. I'm far away from home, I miss my family, my siblings and my friends," Bieber was quoted as telling German newspaper Bild.
