![How a Shadowy Imam Evaded Scrutiny and Forged the Barcelona Cell](https://eng-archive.aawsat.com/wp-content/uploads/2017/08/barcelona-1.jpg)
Media ID: 55381720
Caption:
Caption:
People mourning on Las Ramblas in Barcelona, Spain, at the site of last week’s attack. Samuel Aranda for The New York Times
![How a Shadowy Imam Evaded Scrutiny and Forged the Barcelona Cell](https://eng-archive.aawsat.com/wp-content/uploads/2017/08/barcelona-1.jpg)
People mourning on Las Ramblas in Barcelona, Spain, at the site of last week’s attack. Samuel Aranda for The New York Times