Olivia Newton-John has died at the age of 73. Her husband, John Easterling, announced the news in a statement on the Grease star’s official Facebook page on Monday, August 8.

Though the statement does not directly say her cause of death, Newton-John had been living with breast cancer for three decades. A source close to the star told TMZ, “After a 30-year cancer journey, she lost her battle to metastatic breast cancer.”

“Dame Olivia Newton-John (73) passed away peacefully at her Ranch in Southern California this morning, surrounded by family and friends. We ask that everyone please respect the family’s privacy during this very difficult time,” Easterling’s statement read. “Olivia has been a symbol of triumphs and hope for over 30 years sharing her journey with breast cancer. Her healing inspiration and pioneering experience with plant medicine continues with the Olivia Newton-John Foundation Fund, dedicated to researching plant medicine and cancer.

In lieu of flowers, the family asks that any donations be made in her memory to the Olivia Newton-John Foundation Fund (ONJFoundationFund.org). Olivia is survived by her husband John Easterling; daughter Chloe Lattanzi; sister Sarah Newton-John; brother Toby Newton-John; nieces and nephews Tottie, Fiona and Brett Goldsmith; Emerson, Charlie, Zac, Jeremy, Randall, and Pierz Newton-John; Jude Newton-Stock, Layla Lee; Kira and Tasha Edelstein; and Brin and Valerie Hall.”

The “Physical” singer was first diagnosed with breast cancer in 1992 but went into remission. Her cancer returned in 2013, but she went back into remission until 2017 when it came back again. More to come as this story develops.