Brittany Murphy's Father Says She Was Poisoned

The actress's father says he believes she and her husband were murdered.
4:02 | 11/19/13

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Transcript for Brittany Murphy's Father Says She Was Poisoned
half hour, with those remarkable new claims that "clueless" star, brittany murphy, was poisoned three years ago. The l.A. Coroner ruled her death the result of natural causes. But new toxicology tests indicate she may have been poisoned. Abc's abbie boudreau has that story for us. Reporter: Shocking claims from actress brittany murphy's family. About the star's 2009 death. KNOWN FOR HER ROLE IN THE '90s Cult classic "clueless." Oh. Reporter: Her untimely death, now called into question. Her father telling "gma," he thinks his famous daughter may have been poisoned. I had a feeling that there was a murder situation here. Yeah. It's poison. Yes. I know that. Reporter: Nearly four years ago, the 32-year-old was found unconscious in her l.A. Home. And died shortly thereafter. The coroner ruled her death was due to pneumonia and anemia. And claimed the prescription medication she was using weakened her system. Her father alleges in court papers that the coroner never tested her hair or other remains for poisons or heavy metals. Then, strangely, five months after the "8 mile" star's death, her husband suddenly died under similar conditions. Our theory is that they were poisoned. But the investigators should look into and determine. Reporter: Now, a new toxicology report, ordered by murphy's father, show samples of the star's hair showed positive for ten heavy metals. One explanation would be exposure to these metals or toxin, administered by a third-party perpetrator with likely criminal intent. Brittany murphy's death is highly suspicious. It is a report from an accred accredited laboratory. It cannot be ignored. Reporter: The lapd refused to comment. But the l.A.'S coroner's office says, we have not seen the results. And nothing has been presented to us. We stand by what we ruled on the case. She was young and wholesome girl. Who wanted the record set straight. Reporter: For "good morning america," abbie boudreau, abc news, los angeles. We're going to bring in dan abrams. Many of us remember this happens. And the timing of the two deaths. And it did seem suspicious at the time. It seems incredibly suspicious. Two young people dies within months of each other, with similar types of natural causes, it's hard to believe. And the coroner's office will tell you, we looked into this. We came up with a conclusion that it was natural causes. It was a series of natural causes. And we're standing by our finding at that time. The fact they didn't investigate for poison specifically is something that the family is focusing on here. And the question's going to be, okay. What do the authorities do with that now? What does it take to reopen an investigation? I think either officially or unofficially, this will be reopened. Whether they technically call it a reopening of the investigation or not, there's no question they're now going to look at this case again. They're going to take another look. They're going to say, did we dot THE "Is" AND CROSS THE "Ts" IN This case? That does not mean they're going to reopen it. But they do want to make sure there's nothing that they missed. Even back at the time, somebody must have been saying, wait a sec. You're talking about him dying, her dying. There were discussions back at the time of the possibility of mold in the house. They ruled that out. There's a lot of questions. But poisoning, that's a crime. You're talking about a serious possible crime that's being alleged. And for them to get evidence of that, they have to get more than just the scientific tests. Hopefully they're going to get some answers. Absolutely. Dan, thank you. We're going to get the latest, now, on the legal battle

This transcript has been automatically generated and may not be 100% accurate.

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