WWE Executive Chairman Vince McMahon underwent major spinal surgery last week. The news was broken by TMZ.

TMZ adds that McMahon was under the knife for over four hours and while the surgery was a success, McMahon is still recovering from the surgery.

McMahon was last seen at the Smackdown live television show from Madison Square Garden earlier this month and while he still barks orders remotely by forcing script changes, he hasn’t been present for live TV or premium live events.

It’s unclear how long the 77-year-old McMahon is out of commission for.