An EgyptAir jetliner en route from Paris to Cairo with 66 people aboard swerved wildly in flight and crashed in the Mediterranean Sea early Thursday, authorities said. Egyptian and Russian officials said it may have been brought down by terrorists. There were no immediate signs of survivors. The Airbus A320 with 56 passengers and 10 crew members, went down about halfway between the Greek island of Crete and Egypt's coastline after takeoff from Charles de Gaulle Airport. Greek Defense Minister Panos Kammenos said the plane spun all the way around and suddenly lost altitude just before vanishing from radar screens around 2:45 a.m. Egyptian time. He said it made a 90-degree left turn, then a full 360-degree turn toward the right, plummeting from 38,000 to 15,000 feet. It disappeared at about 10,000 feet.