New details are available regarding Douglas Kiker’s sudden passing. 

A month after the American Idol alum—who competed on season 18 of the singing competition series—died at age 32, the City and County of Denver Medical Examiner’s report, obtained by TMZ, has shared his cause of death was an opioid overdose. 

The singer, who was also known as “The Singing Garbage Man,” died from a combination of fentanyl, methadone and amphetamines along with recent cocaine use, per the medical examiner. His death has been ruled an accident. 

E! News has reached out to the Denver Medical Examiner’s office regarding Kiker’s cause of death but has not yet heard back. 

Kiker’s cause of death confirmation comes just over a month after his sister, Angela Evans, confirmed her family’s tragic loss on social media. 

“It is with a heavy heart that we have to announce the passing of my brother Douglas Kiker,” Evans wrote in a March 12 Facebook post. “He was sooo loved and will be missed by so many!”

Later, Kiker’s mom Donna Kiker Carrillos-Ramirez also shared a post emphasizing her son was an “amazing” person.