 Names of the suspects were later released (on 25 August).According to the Russian defense minister, four of the arrested men held Estonian passports, two were Latvian, and the other two were Russian citizens.The Estonian Security Police reported on 20 August that six of the eight alleged hijackers were residents of Estonia, and of these, one had Estonian citizenship, two were Russian citizens, and three had undefined citizenship; additionally, several of them were known to have a prior criminal background.