The fight appears to have happened last week after the Met Gala.
According to TMZ, an elevator security camera in the Standard Hotel picked up an altercation between Solange Knowles and Jay Z.
In the video, Solange attempts to kick Jay Z, who then catches Solange's foot.
A security guard in the elevator hits the emergency stop switch, mid-floor.
The security guard holds back Solange as Beyoncé stands in the elevator the whole time without getting involved physically.
