According to Page Six reports:
Officials at The Standard hotel said Wednesday that they had identified the person who leaked a security video of Solange Knowles — sister of the rap impresario’s wife, Beyoncé — going ballistic on him in the elevator while they were leaving a Met Ball after-party last week.
“The Standard has identified the individual responsible for breaching the security policies of the hotel and recording the confidential CCTV video released by TMZ,” said officials from The Standard in a statement. “The Standard has already terminated the individual and will now be pursuing all available civil and criminal remedies. The Standard will next be turning over all available information to the criminal authorities.”
The employee had shopped the footage around for five days before selling it to TMZ for $250,000.