Beyonce’s sister Solange may have a serious problem with the pop singer’s husband, Jay-Z.

A video, posted by TMZ, allegedly shows Solange Knowles attacking Jay-Z in an elevator at an after party following last week’s Met Gala.

The violent vid, captured by a surveillance camera, shows a woman TMZ identifies as Solange entering the elevator with a man in a white tuxedo, who they identify as her brother-in-law Jay-Z. In the video, the woman begins pushing and punching him intensely.

Another man in the elevator manages to restrain her, but she still continues to wildly kick at the man in the tux. At one point, he holds on to her foot but he doesn’t seem to fight back at all during the encounter.

The video is in black and white, but the outfits worn by the man and the woman seem to match the attire Jay-Z and Solange were photographed in at the fashion gala. Another woman in the elevator appears to be wearing a very similar outfit to what Beyonce wore to the event. 

Reps for Solange and Jay-Z did not immediately return FOX411’s request for comment.