Brandon Blackstock's cause of death has been confirmed.

The 48-year-old ex-husband of Kelly Clarkson died from melanoma, a form of skin cancer, Dan Hollis, a coroner in Silver Bow County, Montana, confirmed to USA TODAY Aug. 11. Risk of the condition, which often results from overexposure to ultraviolet light, is seemingly growing in people under 40, the Mayo Clinic reports, especially among women.

Blackstock, a talent manager as well as country star Reba McEntire's stepson, died Aug. 7.

"It is with great sadness that we share the news that Brandon Blackstock has passed away," a statement from his family shared with USA TODAY at the time read.

The news came one day after Clarkson, 43, announced on social media that the August dates of her Las Vegas residency will be postponed while she focuses on her family. The hiatus follows a prolonged absence from her NBC talk show earlier in the year.

Blackstock, who shares two children with Clarkson, "bravely battled cancer for more than three years," the family statement said. "He passed away peacefully and was surrounded by family."

"We thank you for your thoughts and prayers and ask everyone to respect the family's privacy during this very difficult time," the statement concluded.

Blackstock was the first-ever "American Idol" winner's longtime manager. The pair tied the knot on Oct. 20, 2013, at Blackberry Farm in Walland, Tennessee. In addition to Clarkson, he also helped manage clients alongside his dad, including genre superstars Blake Shelton and Carly Pearce.

Blackstock and Clarkson's divorce was finalized in 2022, but the songstress was awarded primary custody of their children, River Rose, 11, and Remy Alexander, 9, two years prior.

Contributing: Melissa Ruggieri, Jay Stahl

This article originally appeared on USA TODAY: Kelly Clarkson's ex-husband Brandon Blackstock's cause of death revealed

Reporting by Anna Kaufman, USA TODAY / USA TODAY

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