Originally Posted by
Airborn Pie
The Skripals were found on a bench in Town were't they, not gardens?
It's also been made clear, that the area in which the secondary infection probably occurred, was not, part of the area which had been scoured during the original event.
The police may have guessed at the wrong route of egress by the original perpetrators or the item could have been move or even both. I think that unless clear and blatant incompetence is demonstrated, it would be harsh to point fingers.
The blessing is that it wasn't kids that found the item.