"Jay Z was ferociously assaulted by Beyonce's sister Solange who was wildly kicking and swinging at him inside an elevator and the attack was captured on surveillance video," TMZ says of the elevator video that it has published.
The publication reports that the incident took place at a Met Gala after party, which was held at the Standard Hotel in New York City, New York May 5.
TMZ also reports that Solange and Beyonce left the hotel in one car while Jay Z left in a different vehicle.
A video of the altercation is below.
(May 12, 2014)
UPDATE: Additional footage of the altercation has been released by TMZ. It is available below.