The Nature Boy Ric Flair did not attend last week’s NXT Takeover as advertised as he underwent surgery, although what kind of surgery was not specified.

“WWE Legend Ric Flair is recovering from successful surgery and will miss tomorrow’s scheduled guest referee appearance at SmackDown. Ric is doing well and we look forward to him returning to WWE in the near future,” read a short statement on WWE.COM.

It is not known how long Flair will be out. Flair recently re-joined WWE on full-time basis after undergoing a battery of health tests to certify him for the road although he wasn’t being used much on shows.