By Melody Chiu, People
May 30, 2017
Nic Gibson/Newspix/REX/Shutterstock

This article originally appeared on People.com. 

Olivia Newton-John is putting her U.S. and Canadian tour on hold after discovering she has cancer, the singer announced on Facebook Tuesday afternoon.

Doctors have diagnosed the star, 68, with breast cancer that has metastasized to the sacrum, according to the statement. The star initially postponed the first half of her concert tour two weeks ago because of severe back pain from what she thought was sciatica.

Along with natural wellness therapies, the entertainer will be treated with a “short course of photon radiation therapy,” adds the statement. Newton-John is “confident she will be back later in the year, better than ever, to celebrate her shows.”

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“I decided on my direction of therapies after consultation with my doctors and natural therapists and the medical team at my Olivia Newton-John Cancer Wellness and Research Centre in Melbourne, Australia,” says Newton-John in the statement.

A rep for Newton-John previously told PEOPLE the star is currently “resting and going through treatment.”

The star has been touring her inspirational album LIV ON, which is a personal collection of songs about overcoming trauma, including her bout with breast cancer in 1992 and the loss of her sister Rona to brain cancer in 2013.

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