German authorities are growing increasingly concerned that newly arrived refugees from Syria and elsewhere in the Middle East are being recruited by radical Islamists once they arrive in the country.
The Wall Street Journal, citing interviews with security officials from across Germany, reports that an increasing number of refugees are attending services at mosques that investigators believe attract extremists.
The report brings into focus a different dimension to the possible security risk posed by asylum-seekers who have flooded into Western Europe for months.
Germany is expected to take in between one million and 1.5 million refugees from the Middle East, Africa, and Asia this year, far more than in years past.
"You can't put Afghans, Syrians, and Eritreans in the same place because they hate each other," Malte Lehming, editor-in-chief of the opinion page of Der Tagesspiegel newspaper told FoxNews.com in October, later adding, "I'm afraid that anti-Americanism, anti-Israel sentiment, and anti-Semitism will be on the rise.