Following Eurpol warning issued today on the same subject in the shipping press. My money however would still be on the load point.
That explains why some of the boxes were so heavy, as suggested in my post above. If the theft takes place at the load point, it still needs to look like it took place en route.
Damn! Speicher. Looks like you'll need to flee the country to avoid capture. Try stowing away in a lorry until you are in for'n parts.Speicher seems very interested in this. I think the boxes were full of chocolate biscuits and she's the guilty party...