Justin Bieber’s Security Guards Accused of Battery

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Justin Bieber
“s security guards allegedly assaulted a photog in Miami and authorities are investigating … our sources has learned.

Bieber was in the parking lot at The Hit Factory, skateboarding in the parking lot.  A photog — the alleged victim — began taking pics of the singer.

Our sources say the photog told cops … 2 of Bieber”s bodyguards rushed him and one started choking him.  He says the bodyguards grabbed his camera and removed the memory card. 

The cops showed up and took a battery report.  The case will be sent to the State”s Attorney for review.

We”re told there are photos of the assault — of course.