New York’s city medical examiner has announced that tests on Philip Seymour Hoffman’s body are inconclusive.
Spokeswoman Julie Bolcer said further tests were needed to determine what caused his death.
Philip Seymour Hoffman, 46, was found dead at his Greenwich Village home on Sunday with a syringe in his arm.
Police later arrested four people on drug charges. It is not clear whether the move is linked to drugs found at the actor’s home.
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