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(FILES) This file photo taken on March 22, 2000 shows Australian guitarists and brothers Angus (L) and Malcom Young (R) of the hard rock group AC/DC inaugurating a street named after them in Leganes, near Madrid in Spain. Malcolm Young, one of the founding members of legendary Australian rockers AC/DC, has retired due to health issues but the band will press ahead with a world tour next year, they announced on September 25, 2014. AFP PHOTO / CHRISTOPHE SIMON Image Credit: AFP

Malcolm Young has left AC/DC.

A statement on Wednesday from the band’s label said: “Unfortunately, due to the nature of Malcolm’s condition, he will not be returning to the band.”

No details were provided.

The band announced in April that the 61-year-old guitarist was taking a break to focus on his health.

AC/DC will release the album Rock or Bust on December 2. They will launch a world tour next year.

Stevie Young, nephew of founding members Malcolm and Angus Young, played guitar on the band’s new album and will join them on the tour.

AC/DC includes vocalist Brian Johnson, drummer Phil Rudd and bassist Cliff Williams. Young has performed with AC/DC for 40 years.