HYANNIS, MASS. (WHDH) - An autopsy conducted on the granddaughter of Robert F. Kennedy, 22-year-old Saoirse Kennedy Hill, showed no trauma, the Cape and Islands District Attorney’s Office announced Friday.

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The Kennedy family confirmed Hill’s death in a statement Thursday night following reports that a person had been found unresponsive that day at the storied Kennedy compound in Hyannis Port after police responded to a call about a possible drug overdose.

Hill was taken to Cape Cod Hospital, where she was pronounced dead.

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An autopsy performed Friday revealed “no trauma inconsistent with lifesaving measures,” the district attorney’s office said.

Authorities say they’ll rely on the results of toxicology reports to determine how Hill died.

Barnstable police and state police detectives assigned to the district attorney’s office are investigating Hill’s death.

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