Jay Z was allegedly attacked by Beyonce's sister Solange while riding an elevator last week.

Trouble in Paradise. I wasn't there but TMZ sources say it all went down after a 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 goes crazy, screaming at Jay before unleashing a violent attack.

There is no audio in this video: Read more at TMZ: Jay Z Physically Attacked By Beyonce"s Sister