Egypt's Civil Aviation Ministry said the crash was apparently caused by a mechanical problem and not terrorism. But it occurred as the British prime minister was visiting the resort and amid a week of heightened concerns about terrorism that have led to canceled flights around the world.
They're calling it mechanical failure, which is certainly credible -- though the plane crashed without any distress call, and had recently passed a maintenance inspection in Norway.
Trying to figure out whether these kinds of stories mean anything or not is hard, and perhaps provides some sense of what intelligence analysts go through all the time.