Hundreds of frenzied teenagers mobbed 16-year-old pop estrela Justin Bieber and knocked down his mother as he arrived in New Zealand, stealing his hat as he was rushed through the airport to escape the fans.

The heartthrob Canadian singer tweeted his 2.1 million fãs Wednesday to report: "Finally got to New Zealand last night. The airport was crazy. Not happy that someone roubou my hat and knocked down my mama. Come on people."

The star's mother, Pattie Mallette, tweeted that she was "OK" after being pushed over por rampaging fãs at Auckland Airport late Tuesday. "Thanks for all ur support!! I'm ok thank you!!!," she wrote.

It was his mother's posting of vídeos of Bieber cantar on YouTube that first caught the attention of the música industry. His song "Baby" became a top-ten hit on iTunes earlier this year, and his popularity has grown to teen idol status.

Before arriving at the airport, the blond-haired singer had told fãs that he wanted to sign autographs and have pictures taken. But police and security had to shut the opportunity down because fãs were pushing.

The frenzy followed similar scenes in Sydney, Australia, earlier in the week, where police canceled a Bieber show, concerto after surging crowds crushed some fans. The most serious injury was a fractured kneecap.

A similar situation occurred at a mall in Long Island, New York, in November. Bieber's free show, concerto was canceled at the 11th hora when hundreds of fãs stampeded after a reported sighting of the teen star.

In New Zealand, a mob of mainly teen girls screamed their welcome and swarmed toward Bieber at the airport. Escorted por security, police and minders, Bieber quickly left the airport out a side door.

A waiting black SUV whisked him away, leaving some fãs sobbing with disappointment.

After Bieber's departure, teen Tory Shaffett said she was having trouble breathing.

"Oh my god, he was so amazing and beautiful. I can't believe I saw him," she told reporters.

Bieber bungy jumped off Auckland Harbor Bridge on Wednesday and posted footage on his Twitter account.

Later Wednesday, Bieber wore an All Blacks rugby jersey and played drums at a música lesson with a dozen teens at Strathallan High School for girls, before belting out half a dozen songs at an impromptu show, concerto in front of 500 students.

He sang "One Time," "Never Let You Go," "You Smile," "That Should Be Me, Baby" and "Favorite Girl" to his teenage girl audience.

He also had a request for their seguinte música lesson.

"The seguinte song you need to learn is 'One' por Metallica. You guys keep rocking out," The "Stuff" news website quoted Bieber telling the students, aged from 11 to 17.

"I'll definitely be back," he added.