London: Robert F Kennedy Jr’s estranged wife, Mary Richardson Kennedy, died of asphyxiation caused by hanging, according to medical officials in New York.
Mary was found dead in a barn behind the main home on the Kennedys’ property in Bedford, north of New York City on Wednesday afternoon.
She left a note, The New York Times reported.
Kennedy, a lawyer and radio host, is the nephew of former US president John F Kennedy and son of Senator Robert F Kennedy, both of whom were assassinated in the 1960s.
A spokeswoman for the Westchester County Medical Examiner’s Office said a post-mortem examination had revealed the cause of death.
No toxicology test results would be available for several months, she said.
Kennedy’s marriage to Mary in 1994, in a ceremony aboard a boat on the Hudson river, was his second.
The couple had four children over the 16 years of their marriage before he filed for divorce in 2010.
The 52-year-old, an architect, had brushes with the law over drug and alcohol abuse, and was arrested twice for driving under the influence at about the time they separated.
“We deeply regret the death of our beloved sister Mary, whose radiant and creative spirit will be sorely missed by those who loved her,” the BBC quoted the family as saying in a statement issued by lawyer Kerry Lawrence, who had represented Mary Kennedy in a drink-driving case.
“Our heart goes out to her children who she loved without reservation,” the statement read.