The Austro-Hungarian authorities established an auxiliary militia known as the Schutzkorps with a moot role in the empire's policy of anti-Serb repression. Schutzkorps, predominantly recruited among the Muslim (Bosniak) population, were tasked with hunting down rebel Serbs (the ''Chetniks'' and ''Komitadji'') and became known for their persecution of Serbs particularly in Serb populated areas of eastern Bosnia, where they partly retaliated against Serbian Chetniks who in fall 1914 had carried out attacks against the Muslim population in the area. The proceedings of the Austro-Hungarian authorities led to around 5,500 citizens of Serb ethnicity in Bosnia and Herzegovina being arrested, and between 700 and 2,200 died in prison while 460 were executed. Around 5,200 Serb families were forcibly expelled from Bosnia and Herzegovina.