Solange attacks Jay Z in elevator with Beyonce present

Julianne Cassidy

Beyonce and her husband Jay-Z arrive at the Metropolitan Museum of Art Costume Institute Gala Benefit celebrating the opening of "Charles James: Beyond Fashion" in Upper Manhattan, New York Photo: Image by ExeUser ExeUser ExeUser

Solange attacks Jay Z in elevator with Beyonce present

By Julianne Cassidy. CREATED May 12, 2014

Beyonce's sister, Solange Knowles, has reportedly assaulted her brother-in-law, Jay Z, while in an elevator following last week's elegant Met Gala. 

The elevator video features Solange swinging her arms at Jay Z as she's held back by an unidentified man, believed to be a bodyguard. At one point Solange begins kicking, which prompts Jay Z to attempt to grab her foot.

"When you look closely, you see the bodyguard hit the emergency stop switch on the 12th floor -- mid fight -- presumably to keep the fight private," reports TMZ which obtained and leaked the security footage. "At one point, Solange smacks Jay with her purse ... spilling the contents all over the floor of the elevator."

Beyonce can be seen standing motionless during much of the lengthy altercation, although she appears to step between her sister and husband twice.