Jay Z was ferociously assaulted by Beyonce's sister Solange the night of the Met Gala. 

Solange was wildly kicking and swimming at him inside an elevator and the entire thing was caught on surveillance video.

According to TMZ sources, it all went down at the met gala after party last week at the Standard Hotel in NYC. In the video Jay Z, Beyonce and Solange step into the elevator and then Solange just goes CRAZY. She screams at Jay before unleashing a violent attack that goes on for more than 3 minutes. 

A bodyguard attempts to hold her back but she manages to connect with him at least 3 times. 

Beyonce stands by without getting physically involved. 

If you look closely, you can see the bodyguard hit the emergency stop switch on the 12th floor - mid fight - assuming to keep the whole thing private. 

It’s uncle what triggered the fight.

All three of exited the building together - Solange looking pissed. Beyonce and her sister get into one car and security takes Jay to a different one. 

Photo Credit: Getty Images