Sunrise host David Koch asked the teenagers to leave following Bieber's impromptu song. Many of them had been waiting since 6pm yesterday to see their young idol. "You've now have to go home in a quiet manner," Koch told them. Meant to perform at Circular Quay Bieber, 16, was meant to sing three songs at the Forecourt in front of the Overseas Passenger Terminal on Seven's Sunrise program, in what would have been his only Australian public performance. But whispers that he had arrived early forced a crowd surge about 2am. Problems with the excited group continued over the following hours, with crowd surges crushing and trampling some fans and breaking barriers.

Channel Seven reported at least 10 girls fainted and were treated by paramedics. With an estimated 4000 people waiting and many more expected to turn up, police decided to call off the free performance. "We pulled out more than 100 teens suffering distress at the front of the stage," a police spokesman said. I would love you to stay and hang but you have got to go. The police say you've got to go home Parents angry at organisers

Angry parents blamed Channel Seven for the chaos, saying the event was poorly organised and dangerous. One father who took his children to Martin Place said angrily: "Clearly this total waste of our kids' time, sleep and pocket money getting there was a deliberate publicity stunt designed to exploit fans. "Certainly [Sunrise] knew that thousands of kids would turn out, and it would be unmanageable, and set him up to play to a few kids at Martin Place. "Channel Seven and Sunrise owe the fans and their parents an apology for shameless publicity stunts that ended in injury, hurt , disappointment, money spent and sleep deprived." Colleen McMenamin, who took her daughters to the concert, said crowd control was "non-existent" and Channel Seven "owes the public an explanation".

"People were pouring into the forecourt yet it was at least and hour before any announcements were made," she said. "A notice was then put up on the stage screen saying that the police had called off the show. "At this point there were a few police moving through the crowd saying that the show had been cancelled." Meanwhile, Channel Seven's head of morning programming, Adam Boland, has blamed parents and poorly-behaved fans for the extraordinary crush. "At one stage we asked any parents to come in and help ... and we had (emcee) Mike Goldman trying to get this crowd back into this space, but they just wouldn't move ... so the police inspector and myself decided to pull the plug," Boland said.

Bieber tweets disappointment Bieber tweeted that he was "just as disappointed as everyone else". "I woke up this morning to the police cancelling the show for safety reasons. "I love my fans ... I love it here in Australia ... and I want to sing." Koch said on Sunrise: "It was quite extraordinary scenes, quite dangerous scenes down there."

Braeley Brotherstone, 10, said she had travelled by train from Liverpool with her mother, Tracey, about 3am today so that she could watch the concert at Circular Quay. "I was at Circular Quay at 5am but we were told the concert was cancelled so we came here," said Braeley, holding a poster of Bieber photos and hearts outside the Channel Seven studios in Martin Place. "I like Justin 'cause he’s hot. He's got a fantastic body and a great voice." Safa Shalak, Samarah Bayrouti, Moana Morrs and Tania Chamaa, all 16, said they were angry with the concert organisers for cancelling the concert as they had been camping out at Circular Quay since 5pm yesterday. ''We brought our PJs and blankets. It was really cold.

"We waited there all night. They promised us three songs but he only sang one [at the studio]," Samarah said. "Some of his fans came all the way from Perth and Adelaide ... I wouldn’t do it again. We only got to see him through the window. We could have seen more on television."

Martin Place mosh pit

Martin Place turned into a mosh pit this morning as thousands of fans rushed from Circular Quay to the Channel Seven studios, hoping to get a glimpse of the teen star. Police officers lined the barricade in front of the glass windows of the studio as Bieber sang Baby and young girls yelled out his name and waved placards.

Even after he finished the song and left the studio, the fans remained outside, repeatedly pushing in crowds towards the studio glass windows in the hope he would make another appearance. Eight children treated outside Channel Seven studios Inspector Millevoi, the NSW Ambulance commander outside the studio, said eight children were treated by paramedics. Two children were brought to Sydney hospital. One teen fractured her knees and another hit her head and "was knocked out for a while", Inspector Millevoi said. The other children were treated for hyperventilation, he said.

Deja vu The sequence of events leading up to this morning's cancellation in Sydney was remarkably similar to the events that unfolded in a mall in Long Island, New York, last November. Bieber's free concert was also cancelled at the 11th hour when hundreds of fans stampeded after a reported sighting of the teen star before the schedule start of the Friday afternoon performance. Scott Braun, Bieber's manager, was later charged with reckless endangerment and criminal nuisance. Police alleged that Braun failed to properly control the situation at the mall. According to reports, Braun had refused a police request to send a Twitter message to Bieber's fans to notify his followers that the event was cancelled.

Braun was taken into custody last month and formally charged with the offence. If found guilty, he could be sentenced to a year behind bars. Loading Bieber became a worldwide sensation when he released his debut single One Time less than a year ago. Glenda Kwek, Paul Tatnell and AAP

