Federal aviation officials have imposed a restricted flight zone over parts of Hyannis after intense media coverage of Sen. Edward Kennedy's diagnosis of brain cancer.

Federal Aviation Administration spokesman Jim Peters said the FAA began restricting air traffic on Wednesday. That was the day Kennedy returned to the Kennedy compound in Hyannis Port after being released from Massachusetts General Hospital.

Peters would not say whether the restrictions were imposed to keep news helicopters from hovering above the Kennedy compound.

He said that only unauthorized aircraft are being kept away. Any aircraft landing or taking off from the Barnstable airport can go through the air space. Federal, state and local medical helicopters are also allowed, as are military aircraft.

The restrictions will remain in place until Tuesday.