Crimes may be committed both against and by immigrants in Germany. Crimes involving foreigners (German: Ausländerkriminalität) have been a longstanding theme in public debates in Germany. In November 2015, a report that was released by the Federal Criminal Police (BKA) stated that "While the number of refugees is rising very dynamically, the development of crime does not increase to the same extent." Interior Minister Thomas de Maizière (CDU) noted that "refugees are on average as little or often delinquent as comparison groups of the local population." A 2018 statistical study by researchers at the University of Magdeburg using 2009-2015 data argued that, where analysis is restricted to crimes involving at least one German victim and one refugee suspect and crimes by immigrants against ot