Coroner States That Margot Kidder's Death Was An Intentional Overdose

Coroner States That Margot Kidder's Death Was An Intentional Overdose

The official cause of death was self-inflicted drug and alcohol overdose, the coroner ruled in a press release.

Almost three months after Margot Kidder was found dead at her home in Montana, the actress' death has been ruled a suicide by overdose. The Coroner has not specified what drugs she took.

Maggie McGuane, the Superman actress' daughter by ex-husband Thomas McGuane, said that it is "a big relief that the truth is out there" in an interview with the Associated Press.

Margot had battled bipolar disorder and became an advocate for mental health, public in her own struggles.

Back in May, the 69-year-old actress was found dead in her Montana home and her rep at the time claimed that the Superman star had passed peacefully in her sleep. While living in Montana, she was also an activist for progressive causes and animal rights.

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"It's important to be open and honest so there's not a cloud of shame in dealing with this", she continued. She went missing for four days before being discovered in a Los Angeles homeowners' backyard.

Joan Kesich, a longtime friend who found Kidder's body, said Kidder was fearless and always spoke the truth, regardless of the consequences.

McGuane, who could not immediately be reached for comment Wednesday night, told the AP that she urged people with mental illness to seek help. But now her daughter, Maggie McGuane, has revealed that her mom committed suicide.

Actress Margot Kidder is shown in scene from the 1978 movie Superman with Christopher Reeve (left) and Jackie Cooper.

Kidder struggled with mental illness for a big chunk of her life, with events getting worse following a auto accident in 1990 that left her in debt and led her to using a wheelchair.