UPDATE: Jay Z and Solange Knowles have 'apologised to each other' following their altercation at the Met Ball. A joint statement from Solange, Jay Z and his wife Beyonce - who was also in the elevator at the time - reads...
'As a result of the public release of the elevator security footage from Monday, May 5th, there has been a great deal of speculation about what triggered the unfortunate incident. But the most important thing is that our family has worked through it. Jay and Solange each assume their share of responsibility for what has occurred. They both acknowledge their role in this private matter that has played out in the public. They both have apologised to each other and we have moved forward as a united family. The reports of Solange being intoxicated or displaying erratic behavior throughout that evening are simply false. At the end of the day families have problems and we're no different. We love each other and above all we are family. We've put this behind us and hope everyone else will do the same.'
12 May 2014: WATCH The Moment Solange Knowles 'Attacks' Jay Z
Solange leaving the Met Ball after the alleged attack - you can see Jay Z and Beyonce in the background [Rex]
Breaking news alert! A video has just popped up on the Internet that appears to show Solange Knowles attacking her brother-in-law, Jay Z. The footage apparently comes from a surveillance tape in a lift at the Met Ball, which took place last Monday night, and has been obtained by TMZ.
Beyonce's sister can be seen kicking and swinging at the rapper, who doesn't retaliate, while Beyonce stands by before stepping in momentarily. According to TMZ, the argument took place at the Standard Hotel in New York City, where the trio went post-Met Ball, but it's unclear what triggered the fight. A bodyguard attempts to hold Solange back, before what looks like hitting the emergency stop button to keep others from seeing the fight when the lift doors opened.
Watch the full video footage for yourselves below...
So what could this mean? Jay Z and Beyonce arrived at the swanky event last week looking more loved-up than ever, even staging a faux proposal in front of the paps. Meanwhile, Solange rocked up to the red carpet wearing a custom-made, coral-coloured dress courtesy of 3.1 Phillip Lim, but the trio did not pose together.
Jay Z, Beyonce and Solange arriving at the Met Ball [Getty]
Unsurprisingly, 'Solange' and 'Jay Z' are now trending on Twitter with a zillion memes created within minutes. We'll keep you updated as this breaking news story unravels.