Kansas City television station KCTV reports that the autopsy results released Tuesday say 36-year-old Lenny Sullivan died of acute amphetamine and heroin intoxication.

Sullivan was assistant road manager to Springsteen’s E Street Band. He was found dead at Kansas City’s InterContinental Hotel on Oct. 26, just hours before Springsteen and the band were to take the stage at the Sprint Center. The show was canceled.