Coroner: No Drugs, Alcohol in Armstrong's System

The Los Angeles County Coroner tells ET that no drugs or alcohol were found in Real Housewives of Beverly Hills star Russell Armstrong's system at the time of his suicide last month.

The Coroner's office determined that Armstrong died of suicide by hanging when an autopsy was conducted two days after his body was discovered.

Russell's roommate was the last person to see him alive on August 12 at around 8 p.m., three days before the suicide. On August 13, Russell failed to show up for a planned dinner with his wife Taylor and the next day his roommate began getting worried phone calls from friends who were concerned about not hearing from Russell.

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The 47-year-old was found hanging by an electrical cord from the rafters in a bedroom at a Los Angeles-area residence on August 15. He was clothed, and no note was found.

MORE: Russell Armstrong Disturbing 911 Call

According to the report, Russell had a medical history of depression which stemmed from financial and relationship problems.

His suicide was addressed on Monday night's Real Housewives of Beverly Hills season premiere.