Ozzy Osbourne cancels North America tour, including Xcel stop, for health reasons

Ozzy Osbourne has canceled his North American tour dates, including his July performance at Xcel Energy Center, as he prepares to undergo additional medical treatments.

The singer and entertainer made the announcement Monday. Already-purchased tickets will be refunded.

“I don’t want to start a tour and then cancel shows at the last minute, as it’s just not fair to the fans," Osbourne said in a statement. "I’d rather they get a refund now and when I do the North American tour down the road, everyone who bought a ticket for these shows will be the first ones in line to purchase tickets at that time."

In January, Osbourne spoke about his recent health battles, including a Parkinson's diagnosis.

Ozzy Osbourne breaks his silence on his battle with Parkinson's disease

Osbourne will be undergoing treatment in Switzerland in April.

He was set to perform July 3 at Xcel Energy Center.