Justin Bieber was tackled by an unidentified man at Macy's Herald Square in Manhattan Thursday. Bieber was at the store to debut his new perfume, Someday, and was jumped when he went outside to greet fans.

A man jumped over a metal barrier and knocked Bieber to the ground. A local affiliate has the story (above). Justin is said to be alright, just shaken up.

According to some online reports, the individual was actually an undercover police officer who was trying to protect the Biebs.

See the commercial for Someday, featuring Justin, after the jump.