Building and in the attic possibly, in the area where renovation works were underway. It is typical experts say that renovationtype work around such ancient timbers, 800 years old, incredibly dry, there is always the potential there that you can have an accident like this. But no, the investigators so far are working with caution. They need to ensure the structural security of the building, although we know the walls and the facade remain standing and remain safe. How safe are they precisely for investigators to get into those high reaches where the attic was that burned through isnt clear. So it is going to take a little more time, i think, before the investigators, the real experts who can begin to pinpoint precisely the nature and what caused it. That may take a little longer yet. Nic robertson, thank you. And as you were speaking, were looking at live pictures of people walking through the streets of paris. And emotional. And as the president said, he hoped unifying for the country