Metallica said Friday they are canceling an upcoming tour of Australia and New Zealand because lead singer and guitarist James Hetfield, 56, is reentering an addiction treatment program.

“We are truly sorry,” the band said in a statement to fans posted on their Instagram. “As many of you probably know, our brother James has been struggling with addiction on and off for many years.”

METALLICA DONATES MORE THAN $277,000 TO PEDIATRIC CANCER HOSPITAL IN ROMANIA

The note from band members Lars Ulrich, Kirk Hammett and Rob Trujillo said they plan to head back to the Southern Hemisphere as soon as the band’s health and schedule permits.

“We are devastated that we have inconvenienced so many of you, especially our most loyal fans who often travel great distances to experience our shows,” they said.

CLICK HERE TO GET THE FOX NEWS APP

The band said all concert tickets will be refunded.