The Department of Homeland Security issued a bulletin Wednesday warning airlines of possible attempts to attack passenger jets using explosives packed in shoes, Fox News has confirmed.
The threat is described as unrelated to the Sochi Olympics.
Sources familiar with the bulletin tell Fox News the intelligence was not specific to an airline, or time frame, but it suggested flights from overseas, coming into the U..S, are potentially at risk, not domestic flights within the United States.
The bulletin calls on screeners to increase their use of explosive detection swabs on passengers’ shoes. Fox News was told these very visible changes to security procedures are expected at airports overseas and not domestically. Passengers flying into the U.S. can also expect more pat-downs.
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