Since this is a significant subject that demands truth, I appreciate you providing it. After reading the ABC News story, it is evident that the autopsy determined that "multiple trauma" from the fall—including head injuries and internal and external bleeding—was the main cause of death. Several chemicals were found in his body, according to the investigation, but it made it clear that these were not the primary cause of his demise.
Because blaming the death only on drug usage can propagate false information and obscure the true facts, this difference is crucial for fact-checking. In your fact-check, it might be useful to make this clear and see if any experts or forensic specialists have offered any insights into how substance abuse and trauma may interact in these situations.
Further supporting your analysis might be the whole autopsy or other reliable sources, such as medical examiner reports. Considering the delicate nature of these subjects, accuracy is essential in these conversations.