A man has been taken into police custody after he attacked teen superstar Justin Bieber today.
The pint-sized singer was at a promotional event at Macy's in Manhattan, New York when the incident happened.
Justin was reportedly shaken up when a man jumped over a blockade and knocked him to the floor.
Snapped: This image taken on a woman's camera phone that shows the moment when a man broke through a barricade and attacked Justin Bieber
Shaken up: Justin Bieber was attacked by a crazed man as he greeted fans at a promotional event at Macy's in New York today
A witness said the 17-year-old shouted: 'What? What?' as the screaming man tackled him and pushed him on the ground.
Security officers quickly grabbed the man off of Bieber and authorities from the New York Police Department took him away.
Upset by the incident, Bieber rushed back into the store and did not talk to waiting reporters.
Dozens of fans had camped out in front of the famous department store for two days to get the opportunity to meet their idol.
Fan fever: A man jumped a barricade as Bieber's loyal followers gathered outside the shopping centre The Baby singer was doing a personal appearance to launch his new fragrance Someday.
He had appeared on The View this morning and tweeted: 'Gonna chill..grab a bit..then see everyone at MACY's for the #SOMEDAY launch. LEGGO!!'
Justin has had other security scares including at an event in 2009 at the Roosevelt Field Mall that was cancelled after thousands of fans mobbed the shopping centre.
He tweeted to his fans to leave the mall because police were threatening to arrest out of control fans
