WWE Superstar Death -- Vicodin and Valium

Former WWE Superstar Eddie Fatu aka Umaga -- who died in December -- was the victim of a bad combination of drugs, according to the Harris County Medical Examiner in Texas.

Dan Morgan, the supervisory forensic investigator for Harris County, blamed "acute toxicity" -- claiming the combined effects of hydrocodone (aka Vicodin), carisoprodol (muscle relaxer), and diazepam (aka Valium) were responsible for the wrestler's death.

The death was ruled "accidental" -- Fatu was 36.

According to the WWE, Fatu was released from his wrestling contract on June 11 for violating the WWE Wellness Program and for refusing to go to rehab.