Solange Knowles mysteriously disappeared from The Forum in Inglewood, Calif. after walking the MTV VMAs red carpet on Sunday.
Us Weekly reports Beyoncé's younger sister went missing one hour into the show -- long before the "XO" singer's performance -- and there is no word on why she skipped the rest of the show.
Before going MIA the "Losing You" singer shared a few photos of herself in the H&M tuxedo jacket and trousers she wore to the event on her Instagram account.
Knowles was famously involved in a brawl with her brother-in-law Jay Z after the duo and Beyoncé left the Met Gala back in May. A video of the incident surfaced a week later prompting the trio to release a joint statement claiming all was well between them. The fight also fueled rumors that Beyoncé and Jay Z's marriage was suffering.
Knowles addressed the issue in a July interview with Lucky magazine in which she explained they all feel "at peace" with the statement they put out.