Security forces stand guard at the entrance of the United Nations headquarters in Geneva, Switzerland, Dec. 10. The city was placed on high alert this week after a CIA tip warning of a possible planned attack. | Getty 2 Syrians arrested in Switzerland with traces of explosives

Swiss authorities arrested two Syrians in Geneva on Friday who had traces of explosives in their vehicle, according to Swiss media.

The Tribune, Geneva’s daily newspaper, didn’t provide additional details on the men who were apprehended and said it was unclear whether it was connected to the heightened security alert authorities had called for.


Geneva was placed on high alert this week after a CIA tip warning of a possible planned attack on the city. U.S. officials had urged Americans who were in Switzerland to be vigilant.

According to NBC News, Switzerland's public prosecutor said authorities were looking for suspects linked to al Qaeda and the Islamic State.

“In light of the international and national investigation that followed the attacks in Paris, the Police Department in Geneva is actively searching for several individuals under the guidance of the Federal Intelligence Services,” the city’s security department said Thursday in a statement.

Just last month, the Islamic State claimed responsibility for terror attacks in Paris that killed more than 130 people. The known pepetrators of those killings, however, were all citizens of European countries.