Rey Mysterio announced on Monday afternoon that the results of his recent MRI test revealed that he will in fact need surgery to repair his knee, which has already undergone surgery before.

Mysterio tweeted the following message in Spanish on Monday:

"Buenas tardes. Siento mucho el tener que dejarlos sin mi presencia en el ring por UNOs meses! Sirugia8/26 le pido a dios qca la ultima!619!"

Mysterio's next knee surgery is scheduled for Friday, August 26th and he will be out of action for several months.

Mysterio followed up with another tweet, apologizing for letting his fans down:

"Sorry4 the let down! Promise to make it back as soon as possible!Gonna miss what I luv most-ENTERTAINING U's!619"