Teresa Heinz Kerry was in critical but stable condition at a Boston hospital after being transferred there from a hospital in Nantucket, where she and husband Secretary of State John Kerry were vacationing.
A family spokesman said that Heinz Kerry was transferred to Massachusetts General Hospital from Nantucket Cottage Hospital, where she was taken by ambulance earlier today.
"Late Sunday afternoon, Mrs. Teresa Heinz Kerry was taken by ambulance to Nantucket Cottage Hospital, accompanied by her husband, Secretary of State John Kerry," Kerry Personal Spokesman Glen Johnson said. "Once doctors had stabilized her condition, she was transferred to Massachusetts General Hospital in Boston, again accompanied by the Secretary."
Nantucket Cottage Hospital hospital spokesman Noah Brown, said Heinz Kerry, 74, was admitted today, but would not say why.
Sources close to the family told ABC News that she was taken from her home to the hospital by ambulance after falling ill this afternoon, but they did not provide any details of her illness.
Heinz Kerry, the wife of Secretary of State John Kerry, and the widow of former Sen. John Heinz, survived breast cancer, after being diagnosed with the illness in 2009.