Getty Images We now have a confirmed cause of death for Storage Wars star Darrell Sheets. We learned that Darrell passed away on April 22 at the age of 67 in Lake Havasu, Arizona. Now the Mohave County Medical Examiner's Office has revealed the official cause of death. His death has been ruled a suicide. He was found dead at his home in Arizona with police saying it appeared he had died from a self-inflicted gunshot wound to the head, reports TMZ.