But that's the whole joke of the article ? I don't think it is intended to be that serious. It is kind of those "weird"/rare crime that newspaper have fun reporting on
if they got extracted from unopened Lego sets (e.g. to "launder" stolen Lego sets through the 2nd hand part market) they didn't even need to "take them off" (at least in the past) they did ship as separate parts.