More specifically, travel agencies are accused of violating competition rules artificially inflating prices. Those companies were working in the style of a cartel. The investigation is a joint effort between the Israel Police and the Israel Antitrust Authority This occurs after the education minister in the country recommended to organize students trips in such places where six million Jews were murdered by the Nazis during the Holocaust, most of them in Auschwitz. Thousands of Israeli high school students travel to memorials. A trip can cost several thousand shekels per student (1,000 shekels is worth £177). After discovering the dark business, investigators have raided the homes of executives and frozen bank accounts.