How did a lorry carrying 273 dead bodies end up stranded on the outskirts of Guadalajara?

On the southern outskirts of Guadalajara, early in the morning of 15 September 2018, a large container, the type normally attached to a lorry, sank into the soupy ground beside a rutted country road. The refrigerated container could store up to 18 tonnes of material, cooled to -40C. Across its white exterior, a cartoon polar bear in a blue work shirt smiled and gave a thumbs up.

A container like this was a common enough sight in the neighbourhood of Tlajomulco de Zúñiga. What attracted attention was the smell. Sitting there, slumped between cornfields on one side and dilapidated concrete houses on the other, it gave off a thick, cloying odour. Some said it reeked of rotting cabbage and fish, others mentioned putrid meat. But they all agreed: the container exuded death.