The Let Rock Rule Tour was scheduled to hit Concord, Ca on Wednesday (August 13th), but earlier in the day the band informed fans they had to pull the plug "due to illness."

Celebrity gossip site TMZ ran a report on Wednesday where they claim that an unnamed "source close to the band" informed them that drummer Joey Kramer has suffered heart issues in the past and an unnamed "member of the crew" told them that Kramer will be undergoing heart surgery. The site was unable to confirm that claim.

The site did not quote a source that directly attributed the canceled show to Kramer having heart issues but the report claimed that was the reason the show was canceled and they also reported that crew members were told that Saturday's show in Washington will also be canceled.