From CNN Justice Reporter Evan Perez
U-S law enforcement agents in recent weeks have been conducting interviews with people in the U.S. with ties in the Caucasus region, CNN has learned.
The interviews come amid security concerns and public threats by Islamic militants against the upcoming Winter Olympic Games in Sochi, Russia.
The region that includes Dagestan and Chechnya has been the scene of unrest and is in southern Russia, hundreds of miles from the venue of the winter games.
A U.S. official says the interviews are informational and does not mean there are any particular threats being investigated.
Law enforcement officials do so-called “knock and talk” visits, to meet people and to see if there are any issues where they should be focusing. FBI agents did similar visits after last year’s Boston Marathon bombing.
The U.S. has a relatively small population from the Caucasus region, with small communities concentrated in areas of New York, Maryland, Massachusetts, among other states.
In the past year, FBI agents also did similar knock-and-talk visits in Syrian and Lebanese communities, amid concerns about the Syrian civil war.