This is what comes of "fishing expedition" intelligence gathering. Long lists of the merely suspicious are lumped together with the genuinely dangerous. Everyone, including law-enforcement, knows that the overwhelming majority of the listed are harmless, so they dismiss the value of the lists. And what happens when a tragedy such as this occurs? Why the bureaucrats dig harder and add more names to the lists, of course, what else?
US rally shows support for ex-Marine held by Iran on spying charges (AP)
from the article: French reject charges of inaction in Toulouse terror