Via the Associated Press:
Germany's top security official said Friday the greatest terror threat to the country no longer stems from big networks like al-Qaida but from small, independent terrorist cells or "lone wolf" perpetrators.
Interior Minister Hans-Peter Friedrich told The Associated Press that terrorist activities by Muslim extremist organizations have evolved to be decentralized, making their activities harder to track for authorities.
"What worries us" is that there will likely also be more lone wolf attackers who are not directly connected to a major terror group but have radicalized themselves, often through propaganda available online, he said. "There will likely be more of them because the Islamists' propaganda networks seem to be further gearing up."