Security Ramped Up at US Airports After al-Qaeda ‘Invisible Bomb’ Warning

American airports have had security increased after al-Qaeda published instructions on how to make an ‘undetectable’ bomb to bring down passenger jets.

Department of Homeland Security Secretary Jeh Johnson said that the TSA will now begin searching more travelers, especially in wake of the Charlie Hebdo terror attacks in Paris.

While Johnson said that there was ‘no specific, credible threat’ of an imminent attack, recent calls by al-Qaeda and ISIS to attack Western civilians, police and soldiers left them with little choice but to urge on the side of caution.

The latest edition of al-Qaeda’s English-language, online magazine, Inspire outlines how to make the bomb from household goods and without using metal components that would show up in airport security checks.