MR VAN ZYL
To a certain extent.  As I said to you, by planting a limpet mine inside the hall that was used that specific evening by people of the Kewtown Youth Movement, would after the explosion - the first thing would have asked is who were the last people to have used this hall and then they would have obtained the names of those people and accordingly they would have been able to make the inference that it was their bomb that had exploded.  If it was planted on the outside of the structure, I don't think they would have made this inference.