Gabriele Wolff (a former prosecutor) says in her blogpost that the BKA had categorised the photos as legal. If the prosecution in Hannover disagrees with an evaluation of the BKA, surely they must have discussed why, and be able to give reasons for that decision.

The whole affair stinks. And although there is the thing you always emphasise, what E. did with the photos, and what sort of people buys such material, and all that: right, but who wants that sort of "justice"?