Mary Richardson Kennedy, the estranged wife of Robert Kennedy Jr., was found dead on Wednesday, and an autopsy has now revealed her cause of death: she died of asphyxiation due to hanging.

Police who went to Kennedy’s home in Bedford, NY on Wednesday afternoon to investigate a “possible unattended death” found the 52-year-old in a building on the grounds.

Mary was Robert Kennedy’s second wife. They married in 1994 and separated in 2010, and she’d struggled for years with alcohol and substance abuse problems. Toxicology tests are still pending and could take months to complete.

A statement released by Kerry Lawrence, her attorney, said, “We deeply regret the death of our beloved sister Mary, whose radiant and creative spirit will be sorely missed by those who loved her. Our heart goes out to her [four] children, who she loved without reservation.”

The death seems to add another chapter to the cursed Kennedy legacy. Robert Kennedy, Jr. is the nephew of President John F. Kennedy, who was assassinated in 1963. Robert’s father, Robert F. Kennedy, Sr., was shot and killed in 1968.

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