The German Criminal Police Office has tracked 497 “threats,” or individuals with extremist views who could be suspected of carrying out terrorist attacks, newspaper Die Welt am Sonntag reported.
This marks a significant increase since January 2015, when Germany registered 270 potentially violent Islamists.
HORDES of Islamic State members have reportedly sneaked into Europe along with desperate migrants – sparking fears of terror attacks on the continent.
ISIS fanatics have taken advantage of porous borders by travelling from North Africa to Italy on boats packed with refugees, according to terrorism experts.
Now it is feared that the notorious group, which controls much of Iraq and Syria, could target Europe within months.