Hyannis fire responded to the compound after a call was made around 8:30 a.m. It's unclear what Kennedy's medical condition is, but after he spent almost two hours in the emergency room a decision was made to transfer him to Mass General Hospital in Boston.
Kennedy, 76, was placed on a stretcher and wheeled out to the MedFlight helicopter around 10:15 a.m. where it took off from Barnstable Municipal Airport.
The Kennedy family is preparing to host the annual Best Buddies Challenge event in Hyannisport this afternoon, which is a fund-raiser for the organization. Best Buddies was founded by Anthony Kennedy Shriver and helps people with intellectual disabilities.
Hundreds are expected to participate in the event, which kicked off this morning with a 100-mile bicycle ride from the Kennedy Library in Boston to Hyannisport.
A concert at the Kennedy compound is scheduled for tonight.
Kennedy has represented Massachusetts in the United States Senate since 1962..
He was elected in 1962 to finish the final two years of the Senate term of his brother, Senator John F. Kennedy, who was elected president in 1960.
Since then, Kennedy has been re-elected to seven full terms, and is now the second most senior member of the Senate.
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