Whispers surfaced this morning that the band’s 40th anniversary tour may be axed due to the health of one member, with some suggesting guitarist Malcolm Young may be unwell.

The band’s publicist has yet to comment and there has been no official statement from the notoriously private band on the new retirement speculation.

Showbiz commentator Peter Ford tweeted “there was some sad detail” behind the rumoured decision. Earlier, Ford said on 3AW radio that his information was that “we may never hear them perform or record ever again”.

AC/DC, formed in November 1973 by brothers Malcolm and Angus Young, are one of the highest-grossing bands of all time. They have sold over 200 million albums over the past 40 years.

Fans had anticipated an anniversary tour to mark either their formation in November 1973 or the release of High Voltage in February 1975.

Back in 2012 singer Brian Johnson revealed work on their 16th album had been delayed due to a health issue with one member.

In February Johnson told a Florida radio station the anniversary tour was on hold but they were hoping to record next month.

“We’ve been denying anything, ‘cause we weren’t sure. One of our boys was pretty ill, so we didn’t like to say anything, and we’re very private about things like this, so we didn’t wanna say anything. And he’s a very proud man. But I think we’ll be going into the studio in May in Vancouver. Which means, we should be getting ready.

Whether or not it is, in fact Malcolm Young that is ill, you have to admire the rest of the band for their "No Malcolm, No AC/DC mentality. Either way check back here for more information as it becomes available.