In brief Italian police arrested 30 people over an alleged mafia-linked "hidden bank" run from a car-rental business near Milan, seizing €21 million in assets including cryptocurrency. Prosecutors say the network issued more than €110 million in fake invoices and moved about €68 million abroad, some of it through crypto exchanges. A financial police inspector, a Milan court employee and a lawyer are among those caught up in the investigation, with arrests also made in Spain and Switzerland. Italian police have arrested 30 people accused of running an underground bank for organized crime from a car-rental business near Milan, and…