Ozzfiesta, the leg of Ozzfest slated to take place at the Riviera Maya in Mexico, has been cancelled after it was revealed that Ozzy Osbourne will undergo surgery. The type of surgery was not specified and will take place in May following his South American tour.

In a statement posted on the event’s website, Osbourne will require at least four weeks of recovery time. Refunds will be offered in the next 4-6 weeks.

As previously reported, Black Sabbath announced their last show ever at Ozzfest in Japan this year, slated for November 22. As of now, original drummer Bill Ward will not appear at the show although Osborne has previously stated that he hopes he will join in for the last tour.