Over the past few months, musicians have been canceling tours or shows for lots of reasons: The singer gets sick, tickets just aren’t selling, the drummer breaks both his feet, there are “production issues,” the guitarist gets tackled by a crazed fan and ends up with busted ribs, or they simply aren’t allowed into the country.

Then there was the cryptic message Scars on Broadway posted on their Web site on Monday, which announced that the group’s North American tour — slated to begin on October 19 — has been canceled because singer/guitarist Daron Malakian’s “heart wasn’t into touring at this time.” The band, which also features Malakian’s System of a Down bandmate John Dolmayan on drums, said they will not be rescheduling the tour and are also canceling an October 14 appearance on “Jimmy Kimmel Live.”

So, what gives? Malakian updated fans this morning, telling them, “I’ve read many of your postings, and I owe it to all of you to respond: I understand all of your frustration and anger, and I never meant to let any of you down. Your support for Scars has been so important to me and the band. I would never cancel a tour unless I had real reasons and personal things that require my undivided attention. The music of Scars will live on, but now is a time when aspects of my life need to be tended to. I hope all of you can understand.”

A representative for the group could not be reached for comment at press time.