07/08/2013 at 07:00 AM EDT
A person in close contact with the family says Teresa Heinz Kerry, the wife of U.S. Secretary of State John Kerry, was hospitalized after showing symptoms consistent with a seizure.
The person was not authorized to speak publicly about her condition and spoke to the Associated Press on condition of anonymity.
A spokesman for John Kerry says the 74-year-old Heinz Kerry was flown to Massachusetts General Hospital in Boston on Sunday night after doctors at a hospital on Massachusetts' Nantucket Island stabilized her.
The secretary of state was with his wife as an ambulance transported her to the island hospital, and also during her transfer to the Boston facility.
A spokesman for Nantucket Cottage Hospital says Heinz Kerry arrived in critical condition, but doctors were able to stabilize her.
Heinz Kerry is the widow of former U.S. Sen. John Heinz, heir to the Heinz ketchup fortune. She married John Kerry in 1995.