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Those drugs included heroin, cocaine, amphetamines, and benzodiazepines. The combination of heroin and cocaine is known as a "speedball." Hoffman's death was ruled to be accidental.
The Oscar winner was found dead, with a needle in his arm, on February 2. Hoffman had struggled with addiction earlier in his life, and after decades of sobriety, began using heroin again last year. Though he entered a rehab facility, Hoffman was unable to overcome his addiction.
He left behind a longtime partner, Mimi O'Donnell, with whom he had three children.