Originally published on ProWrestlingSheet.

Sasha Banks did in fact sustain a concussion recently ... and the Boss says reports claiming a referee knee'ed her in the head to cause the injury were 100% accurate.

Banks addressed her concussion during a Wizard World Comic Con appearance in Philadelphia this weekend and said the head injury happened two weeks ago.

When a fan in the con crowd yelled "fire him" she seemed to be pleased with the suggestion ... then explains, "I got knee'd in the head by a referee, which you never think that would happen! I was like 'whoah' ... what just happened?!"

The incident is believed to have went down at a May 15th live event in Charlottesville, VA.

Sasha made her return to TV on last week's Main Event, but you can definitely bank on a big pop once she makes her presence felt on RAW!

Check out the interview below.  Don't worry, we cued it to the right part.