A new government report shows that a quarter of those who return to Germany from fighting in Syria or Iraq cooperate with German authorities, while half remain loyal to their cause.
Police have arrested a man suspected of involvement in the far-right terror cell case that has shocked Germany. The man is a suspected accomplice of the trio of neo-Nazis thought to have carried out a string of racist killings.
State governments and the police union are pushing for more police officers to be recruited from immigrant communities to help combat extremism in all forms.
A major German police union has called on internet users to help law enforcement prevent tragedies such as the Norway massacre by reporting violent extremist views expressed on blogs and web forums.