Madonna’s representatives, including Oseary, could not immediately be reached for comment on the seriousness of her condition or whether she was awake and responsive.

Her Celebration Tour, announced in a video in January that featured Amy Schumer, Jack Black and Lil Wayne, among others, was set to begin in Vancouver on July 15, with concerts planned to stretch into next year. The tour was set to include stops in Seattle, New York, D.C., Mexico City and London.

“I don’t take any of this for granted,” Madonna, 64, said a few days after announcing her tour. “I feel like the luckiest girl in the world.”

The pop star has had a string of health incidents in past years, including horseback riding accidents in 2005 and 2009. In 2020, she announced she would be undergoing regenerative treatment for missing cartilage, several months after she abruptly canceled a performance in Lisbon, saying she had “to listen to my body and rest.”