( CNN ) -- A video that TMZ alleges is of Beyonce 's younger sister having an altercation with the superstar 's husband , Jay Z , has surfaced online . In what the site says is surveillance video from an elevator taken the night of the recent Met Gala in New York , a woman who resembles Solange Knowles enters just before a man who appears to be the rapper . Words seem to be exchanged , and then the woman lunges at and begins striking him before an unidentified man grabs and holds her . A woman who resembles Beyonce calmly stands in the corner of the elevator during most of the altercation . It is not yet known what caused the fight . CNN has reached out to representatives for Solange , Jay Z and Beyonce . Solange 's rep is not offering comment . A representative for The Standard , the hotel where the incident is believed to have occurred , released this statement to HLN : . `` 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 said . `` 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 . '' HLNtv.com : Watch the video . Beyonce and Jay Z recently announced their `` On the Run '' tour , which is scheduled to take them to 16 cities this summer . One fan tweeted , `` They better make it to Baltimore first lol '' ( Baltimore is one of the cities slated for the tour ) , while another retweeted that and added , `` Yo ai n't trying miss the show over no damn solange . '' Some found humor in the unverified video , mocking Solange Knowles , who is also a singer . One tweeted , `` Jay Z must have shown Solange her album sales on a line graph . '' The memes also came fast and furious , as well as tweets with the hashtag # WhatJaySaidToSolange . One featured a picture of Solange and the caption `` Solange attacks Jay Z ? The first hit she 's had in years . '' Another used photos of actor Jake Gyllenhaal courtside with Beyonce and Jay Z at a recent basketball game . The caption imagined Beyonce saying to Gyllenhaal `` ... And then Solange was kicking him and screaming in the elevator '' before Jay Z turned to the actor and said in the caption `` ... And she just stood there , '' gesturing to Beyonce . TMZ reports that Beyonce left after the incident with her sister while Jay Z took another car . HLN 's Marc Balinsky contributed to this report . CNN first learned of the alleged fight video from Twitter .
NEW : Hotel makes statement . Hotel releases video that it claims is of a woman . Beyonce and Jay Z are headed on tour this summer .