The talent manager died at 48 of a form of skin cancer as the singer and TV host has canceled tapings and concerts as the news was revealed.

Brandon Blackstock, the talent manager and former husband of Kelly Clarkson, died of melanoma, a form of skin cancer, on Aug. 7. The Silver Bow County Coroner Dan Hollis tells PEOPLE Blackstock "passed away peacefully at his home in Butte,

Brandon Blackstock died of skin cancer. On Monday, the Silver Bow County Coroner, Dan Hollis, confirmed to Rolling Stone that Kelly Clarkson's ex-husband died of melanoma on Aug. 7.