Germany's domestic intelligence agency, BfV, has received oer 100 tip-offs about Daesh fighters among refugees seeking asylum in Germany, Reuters reported.
The German newspaper Berliner Zeitung cited the BfV chief, Hans-Georg Maassen, as mentioning the number of tips during a discussion with Interior Ministry politicians.
Maassen has also said that some of the tip-offs were dismissed as cases of defamation, Berliner Zeitung said.
Xenophobic attacks on migrants are on the rise, and critics have stepped up pressure on German Chancellor Angela Merkel to do more to curb numbers of migrants seeking asylum in Germany.
The BfV agency has not issued a statement and was not available for comment.
