The US will increase security measures at a number of overseas airports that have direct flights into the country, the Department of Homeland Security said.
In a statement, Secretary Jeh Johnson said:
"We are sharing recent and relevant information with our foreign allies and are consulting the aviation industry."
Officials said the Obama administration was pushing for the tighter security measures because of concerns that al-Qaeda operatives in Syria and Yemen were working together to develop bombs capable of being smuggled onto planes.
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