Sincerest condolences to Robert Kennedy, Jr. and his four children at the loss of Mary.

May 16, 2012

by Christina NG and Richard Esposito

Robert F. Kennedy, Jr.'s estranged wife, Mary Richardson Kennedy, (click here) has died at age 52, apparently committing suicide by hanging herself, multiple sources told ABC News.

"We deeply regret the death of our beloved sister Mary, whose radiant and creative spirit will be sorely missed by those who loved her," Mary Kennedy's family said in a statement released through her lawyer. "Our heart goes out to her children who she loved without reservation. We have no further comment at this time."

Bedford, N.Y., police responded to the Kennedy home in Mount Kisco, N.Y., at 1:36 p.m. today to investigate a "possible unattended death," according a news release. While police would not identify the person who died, the house is listed under the names of Robert F. Kennedy Jr. and Mary Kennedy on property reports....