The Department of Homeland Security has warned airlines of the potential new security threat based on "very recent intelligence" considered credible, reports said on Wednesday.

The media report cited several officials familiar with the latest advisory as saying. The intelligence warned of possible attempts to attack passenger jets using explosives concealed in shoes, said an official, who stressed that the intelligence which was not specific in terms of any particular airline, country, time or plot, is unrelated to the Sochi Winter Olympics of Russia.

As airlines will pay extra attention to passenger shoes on inbound flights to US from overseas, passengers on those flights may be subjected to increased scrutiny in pat downs and full- body screening, said the report.


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