Federal prosecutor's spokeswoman Frauke Koehler said in a statement that apartments and other locations were searched in Berlin, Bavaria, Saxony and Saxony-Anhalt today morning.
Two suspects are accused of membership in a terrorist organisation on allegations they belong to IS, while the third is suspected of supporting a terrorist organization. Two are also accused of weapons violations. No arrests were made and no names were released.
Prosecutors say the suspects are believed to be connected to a Syrian arrested in 2016 who was suspected of planning a bombing attack, and another Syrian arrested last week in Leipzig on IS membership charges.