This was just posted on RX Muscle.com Facebook page

BREAKING NEWS: According to several highly credible sources, we sadly report that Dallas McCarver passed away a few hours ago. We are awaiting further details (as they are mixed) but we can confirm that Dallas is no longer with us.
Dave Palumbo will be live shortly to discuss this developing story.
We are shocked and saddened by this and pass our immediate thoughts and condolences to Dallas McCarver's family and loved ones.