In a statement to the Grio, a rep for The Standard said it would investigate the source of the leaked video.
"We are shocked and disappointed that there was a clear breach of our security system and the confidentiality that we count on providing our guests," the statement read. "We are investigating with the utmost urgency the circumstances surrounding the situation and, as is our customary practice, will discipline and prosecute the individuals involved to our fullest capacity."
The video seems to show Beyonce's younger sister, Solange Knowles, attacking her brother-in-law, rapper Jay Z, after a post-Met Gala party on May 5. Jay Z and Beyonce remain calm, while a bodyguard tries to subdue Solange.
The Standard is a boutique luxury hotel located in the Meatpacking district of New York City.