It was coordinated over several distant places, and it knew what, where, when, and how to strike (suggesting an inside job), so the timing with the Olympics wasn't a coincidence, especially with the heavy reliance and messaging on transports.
No one has made any claim, but the government is saying it's the same methods from the fAr LeFt because of the required knowledge.
Not that I was involved or whatever. But how can someone say they had a method when basically it was just a group of dickheads grabbing a map and saying go here or here and here then lighting the place up? Im from America usually something like this is way more convuleted.
Not a bunch of dickheads grabbing a random map, the attacks were on specific instruments that you have to know where they are, how to access them, and what to do with them (okay I guess "toss a burning rag in it" is enough for that one). And that was in towns / places that were across half of the country or something (I think there were attacks West of Paris, then halfway to the North, and one halfway to the South that was thwarted). So likely an inside job / from someone who has worked on those things before. Obviously the actual people who did it could be any random paid homeless guy, but the map was provided by someone who is or has worked on that system, that's the point.