The source says problems between Jay Z and Solange began 15 minutes prior to the hotel altercation. A few of Solange's friends reportedly told The Standard they were Jay Z's guests. The rapper reportedly told Solange to not use his name. Solange, upset by this, said she wanted to leave the event.
On the elevator, the source says Jay Z informed them that he'd be going to Up & Down, where Rihanna would be holding a Met Gala after-party, without Beyonce. Solange was upset by this, according to the report.
Solange "seemed drunk and irritated," according to another source the newspaper cites. "She said, ‘Why can't you go home?' and to Beyonce 'Why does your husband need to go to the club right now?'"
Jay Z reportedly responded with the following: "You're one to talk."
Solange was upset by this response, according to the source. That is when she assaulted Jay Z, as shown in the TMZ-released footage.
Jay Z, Solange and Beyonce have yet to address the matter.
Reps for Beyonce, Jay Z and Solange did not return requests for comment.
To view footage of Solange attacking Jay Z, click here.