Antanzan = to “dance” up, as in to show up, make an appearance. Diebstahl = theft or robbery.
Antanzen + Diebstahl = Antanzdiebstahl. This new German word refers to a new method of pickpocket robbery that certain new arrival-types to Germany are now using all across the country, “a type of con in which thieves approach victims and hug or otherwise surprise them, with the aim of distracting them in order to pick their pockets.”
Sex attacks and thefts like the ones that happened in Cologne on New Year’s Eve were also reported in 12 other German states, German media say. The information comes from a leaked report of the federal criminal police.