FBI warns of possible Islamic State-inspired attacks in US

WASHINGTON, Dec 23 (Reuters) - U.S. federal authorities cautioned local law enforcement on Friday to be aware that supporters of Islamic State have been calling for their sympathizers to attack holiday gatherings in the United States, including churches, a law enforcement official said.

The warning, issued in a bulletin to local law enforcement, said there were no known specific, credible threats.

The notice from the Federal Bureau of Investigation and Department of Homeland Security was issued out of an abundance of caution after a publicly available list of U.S. churches was published on pro-Islamic State websites.

"The FBI is aware of the recent link published online that urges attacks against U.S. churches. As with similar threats, the FBI is tracking this matter while we investigate its credibility," the FBI said in a statement.

Islamic State sympathizers "continue aspirational calls for attacks on holiday gatherings, including targeting churches," CNN quoted the bulletin as saying. The notice describes different signs of suspicious activity for which police should be alert, it said. (Reporting by David Alexander; Additional reporting by Mark Hosenball; Editing by Sandra Maler)

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Thanksgiving terror warning in Europe
A French soldier stands guard near Strasbourg's cathedral in Strasbourg, France, November 21, 2016. France said on Monday it had foiled a terrorist plot and arrested seven people, a year after a state of emergency was imposed to counter a wave of Islamist attacks. REUTERS/Vincent Kessler
French soldiers patrol the street near Strasbourg's cathedral in Strasbourg, France, November 21, 2016. France said on Monday it had foiled a terrorist plot and arrested seven people, a year after a state of emergency was imposed to counter a wave of Islamist attacks. REUTERS/Vincent Kessler
French soldiers patrol past wooden barracks shops during the installation of the traditional Christkindelsmaerik (Christ Child market) near Strasbourg's cathedral in Strasbourg, France, November 21, 2016. France said on Monday it had foiled a terrorist plot and arrested seven people, a year after a state of emergency was imposed to counter a wave of Islamist attacks. REUTERS/Vincent Kessler
French soldiers patrol near Strasbourg's cathedral in Strasbourg, France, November 21, 2016. France said on Monday it had foiled a terrorist plot and arrested seven people, a year after a state of emergency was imposed to counter a wave of Islamist attacks. REUTERS/Vincent Kessler
A French soldier stands guard near Strasbourg's cathedral in Strasbourg, France, November 21, 2016. France said on Monday it had foiled a terrorist plot and arrested seven people, a year after a state of emergency was imposed to counter a wave of Islamist attacks. REUTERS/Vincent Kessler
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