Police in Geneva were looking for several suspects "on the basis of a terrorist threat," Swiss security officials said Thursday, NBC News reported.
"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," according to a statement issued by the city's department of security.
Authorities got word Wednesday that federal officials had flagged that "several suspects were likely in Geneva or in the region around the city," it added.
A senior U.S. counter terrorism official told NBC News that the CIA tipped off the Swiss authorities.
