Surveillance video  of Beyonce's sister Solange Knowles attacking Jay Z in an elevator almost broke the Internet yesterday. And when I say attacked, I mean she went to town on him; yelling, punching, and kicking him to the point that she had to be restrained by a bodyguard.

There's no audio, so it's unclear what Knowles was upset about, but whatever it was happened at a party after the Met Gala fashion event last week. Supposedly it was over something he said that she took the wrong way, but since no one has commented yet it's only speculation.

In the video, which was supposedly leaked by hotel security to TMZ, Solange appears to yell at Jay before lunging at him and hitting him with her arms and purse. She then kicks at him before beingbear-hugged by a guy who appears to be a bodyguard. She finally stops a couple minutes in, but keeps yelling. Then when the doors open she goes at him again, before they finally get out. Beyoncé was also in the elevator, and mostly stays out of it, but does step in between them at one point.

After the group exited the building, Solange and Bey are seen taking one car, while Jay was ushered off into a different one. Whatever went down between Jay and Solange, he’s not having any problems with his wife. According to E! Online, the two of them were all smiles spotted at the Brooklyn Nets game last night. (PHOTO) (PHOTO)