According to the official death certificate obtained by People Thursday, seizures were listed as “significant conditions contributing to death but not resulting in the underlying cause.” Kelly Clarkson’s ex-husband’s official cause of death was listed as malignant melanoma.

Brandon Blackstock's death certificate was just released, providing more insight into his sudden passing at age 48 on August 7. The death certificate was confirmed by the Butte-Silver Bow County Clerk and Recorder’s office in Butte,