A mile, ten blocks from where we were standing right now. Isis says there were eight attackers armed with automatic rifles wrapped in explosives. The french now say there were seven attackers in three teams. They say all of them were killed. One of them was a French National known to police. Police are scrambling to track down any possible accomplices. That search today went to belgium. 1,500 french soldiers are deploying around france trying to prevent further attacks because theres simply so many questions and so much fear about how deep these networks may have been. Our chief National Security correspondent jim schuto on the ground with me in paris. And this is the real fear. You have this many people involved. They had the weapons that they had, they had explosives. They had suicide vests or belts or whatever it was that all were identical and matched. This wasnt just those seven people. No, it was not. They believe there would have been a support network to allow those seven people to carry out the attacks they did here. This was the mumbai style attack that officials have been worrying about since we saw mumbai take place in india and now its happened here. So what we know now, seven attackers working in three groups. They use explosive vests and automatic weapons so common in the middle east to carry out. And they fired a lot of bullets. We know at the restaurant down the street here where more than 10 people were killed, there were 100 bullet casings on the ground. They were well prepared, well armed, well supplied. At this point, we know that one of them was french. Was from the south of paris. He was known to french authorities, hed been radicalized in 2010. But they had no knowledge he was involved in terrorism. And thats why he was still allowed to be walking or did they not know . Do we know that yet . We dont know what his travel was. But they did know of him. Now, this is a problem that we ran into with the Charlie Hebdo attacks. Which took place a fiveminute walk in this direction. The brothers who carried out that horrible, horrible attack were known to police. And one of them under surveillance and they stopped surveillance. Here you have a case where this person was known to have been radicalized but they did not know he was involved in terrorism. So they were not surveilling him. And this is a trouble in france. You can say they made a mistake, but france has hundreds of suspected jihadis. I think thats the point. Some people may be watching and saying, how could they have missed this . Made such a mistake . I think the context youre putting around this is so important. Yeah. Which is, there are too many people. Youre right. Who have come back into this country who are radicalized for them to actually trap. Its an impossible attack. In the u. S. They talk about dozens. Thats a serious number in a country of 300 million people. And if you surveil just one of them, you need a good ten operatives, agents. So you need thousands of agents in this country. No country has the ability to do that. It may be impossible to track everybody. This was a coordinated attack. You had an arrest in germany a few days ago. You have these raids now in belgium that they believe are tied. Its an international plot. This one that had local support but appeared to have plotting direction from isis itself. In light of the alert, they missed an attack like this, thats a problem. It does show you the difficulty of preventing attacks like this. It perhaps shows it is impossible unless you deal with syria itself. Exactly. All right. Jims going to stay with me. He did have a chance to speak to someone who knows the victims of this attack that we are just starting to learn more about. As we learn more details about these victims, we found out one of them was an american, a 23yearold College Student. I want to bring in pamela brown now. Pamela, what are you learning about gonzales . Well, western learning according to the university she is 23 years old. And her name is naomi gonzales. And she was studying abroad. She was studying design in paris and had been there for the semester. One of nearly 80 Foreign Exchange students and was apparently killed in one of the attacks at the restaurants there in paris. The community, the university of california long island is mourning the loss of the student and will be holding a vigil tomorrow on campus at 4 00 p. M. For all the students. California state long beach. As a correction there. Theyll be holding a vigil for the student there tomorrow. And officials trying to identify the bodies. Loved ones are there in paris. Theyve accounted for all of their students. But there is a high level of concern, still. For the other bodies that have been accounted for at this hour, erin. And pamela, i want to ask you one other question as were finding out around the world. Theyre beefing up security. Attacks that are inspired or motivated by these. And you are learning more about what the nfl is doing in light of what happened here outside that football stadium last night. Thats right. In fact, were getting the statement in right now and the nfl saying in addition to the security measures already in place, already approved by the department of Homeland Security that it is beefing up the presence, Law Enforcement presence both inside the stadium for Football Games happening this weekend and beyond and outside the stadiums in the parking lots. In addition, it is asking people attending the games to not bring bags when they come to the stadium. But if they do, if they have to bring a bag. The statement says it is essential to bring one in compliance with the clear bag policy. Meaning the bag should be made of clear plastic, of vinyl, or pvc and not exceed 12 by 6 by 12. It is asking the fans to cooperate with this. They will have more people at the doors monitoring, screening fans as they go into the Football Games this weekend. This has caught the attention of people, really, across the United States whose job it is to secure these types of facilities. And after the attacks there in paris, erin, we have seen across the country that officials are beefing up security everywhere. In los angeles, in new york, as well. Theyre beefing up security at soft targets. And sensitive sites. And now the nfl is doing the same. Erin . Pamela brown, thank you very much. And i want to bring jim back here. Pam telling us the latest that we know about this young woman doing what is a right of passage for many lucky Young Americans to travel overseas and spend some of their college here. And you see her face. Young girls, and i had the opportunity to speak to a fellow student of hers, someone that reached out to me via social media to study with her at california state university. And im just going to read my notes here so i get this right. She just had a moment to describe what she was like. She said she was vibrant and energetic. She always made everyone feel welcome. Genuine, kind, passionate. And she came here as you and i did when we were young to study abroad to fulfill a dream. And she was until this happened just down the street from us here at this restaurant. And another thing her friend mentioned, which is something i think many of us can relate to. She came here knowing of some risks. You dont think of the risk of death on the streets of paris. She came here with the highest hopes. Sweet as can be, described by her friends, and lost her life. Jim, thank you. It is hard to even hear those words. And you think each of these individual numbers is a life that was extinguished so prematurely in such a horrific way. It is unclear whether any attackers got away at this hour. And that is a big question. Who else is involved . Could there be more . Police are searching the city for possible accomplices. We are also learning new information about a series of raids in brussels. And i want to get straight to our national correspondent. You are learning a lot more about these raids as they are desperately trying to find out who else might have been involved to stop any sorts of follow attacks that might be planned. What can you tell us . And theyre very, very worried at this point. We heard from the deputy mayor who basically said, look, the attack is contained. But, in fact, could it start up, again, tomorrow, or the next day. There are three teams that hit multiple locations. We know that the first team hit the restaurant as well as the theater. The second team hit the stadium and locations outside. And really what investigators were looking at right now was who designed the suicide vests. Who built the actual bombs. Who provided the guns. This does not appear to have been just sort of a couple of friends who got together and figured this all out. What we do know is belgian authorities did carry out several raids in the neighborhood of belgium. Im told by a source that at least one of the raids involved a person directly connected to the attacks in paris. Now, investigators were able to trace the homes in the belgian in belgium, because a car rented by one of the suspected terrorists was found near the stadium and had information linking that car to the area. And thats why they were there searching. This investigation is fanning out all across europe. And were hearing of other investigations. One in that car was when searched filled with many weapons. Including grenades, explosives, revolvers. So all authorities are now looking very carefully to see who has been arrested in the last couple of weeks, what they were arrested for, and where their connections may be. Because this is, you have to think of this almost like an enormous spider web that is stretching across that region. And theyre looking to see what links they can make between arrests, lets say in belgium and france and germany, anywhere to try to identify who these people are and whether theyre part of something much larger, erin. Deborah, thank you very much. Im joined mere by simon, a resident of the city. A columnist for the financial times. He was at the stadium when two suicide bombers struck just outside the gates. And simon, whats your understanding of what happened . Was that an attack thwarted . That they were trying to get inside the stadium. What was their intent as far as you understand it at this time. Seems at least one of them was trying to get himself into the stadium. Probably that was the plan to blow yourselves in the stadium live on tv with 80,000 people there and cause even greater carnage than we had last night by a large factor. But they refused to let these guys in and they went and blew themselves up elsewhere killing, i think, up to five people, but causing a lot less damage than they could have done. Its difficult to comprehend. In terms of why he was turned away, obviously it wasnt knew what was attached to him or they would have had someone to arrest him. Do we know why he was turn away at this time . Not precisely. A steward said he turned the guy away. And clearly didnt know he was wearing a suicide vest, but he must have been a fairly suspicious looking person. And when you were there, you heard the explosions. You know, we now, people have seen the video. Well show it again. The explosions happened. The game continues. Was that purposeful the game continued . They knew what was happening and wanted to finish the game to prevent panic . Was it unclear at the time, though . It was an unfolding situation. We didnt know what was going on. There were two explosions within about three minutes of each other in the first half. People chuckled thinking it was obviously that was not the case because it was much louder. Second explosion, the ground shook a bit. And so you knew . You knew . I thought something bad is happening. And it took 20, 25 minutes before the first report on french news sites saying theres an explosion. What kind of an explosion . It was huge uncertainty. France scored a goal. And people cheered. And even in the second half. 20 minutes after the bombs went off . Yeah. France scored. And in the second half when people are getting news on their phones of massive shootings in paris, france scored again. This time i was not watching the game. But people cheered, again. There was even a wave in the first half, which doesnt show people were callous, it shows they didnt know what was happening and how close they came to have something really terrible happen right there. And in terms of who was there. We know the president of france was moved to a safe location. Was that coincidence he was there . Or was that a targeting . These are the questions were simply trying to find answers to right now. We dont know that the suicide bombers knew he would be there. Whether that was part of their plan. It would be very hard for them to get close to the president because thered be body guards around. Probably their aim was to do it on live tv and may not have known he was there. And he left the game to attend to what was happening in central paris. Thank you very much. Ill be talking to you, again, soon. Highlighting the problem of securing a massive city in a free and democratic country that values the two words so much. One French Senate member getting candid about what she calls a, quote, hell of a problem. This is cnn special live coverage. Well be back with that next. Jusdoes that mean they have toer grow apart from their friends, or from the things they love to do . 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Zero due at signing, zero down, zero deposit, and zero first months payment on a new jetta and other select volkswagen models. We now know that three coordinated teams of terrorists are behind the worst attacks france has seen since world war ii. We welcome our viewers in the United States and around the world this hour as we try to find more and more out about these horrific attacks. A fascinating story. 129 people have lost their li s lives, 99 more in Critical Condition as i speak. An American College student among the dead. Hundreds more injured. Hollande vowing a merciless response. Calling this a war. Talking about what i think is so hard for people to understand and why this is so frightening. Which is how could this happen here . A city that was if you can use this word, so prepared and so expectant of something horrible happening. They had been on this heightened state of alert since january. Since the attacks of Charlie Hebdo. In two weeks, you have all of the World Leaders coming here to talk about climate change. I cant imagine a more heightened state of alert. Its a country that knows it has a problem. People going to fight with isis and coming back. I spoke to this french senator. Spoke to a senator but also overseas, the equivalent of that here. And she basically said, even though we know everything going on, its still almost an impossible problem to solve. Listen to what she said. You cannot put a policeman behind everybody. Because we dont have the financial access. One of them, apparently, was known to the police. This french one was known to the police. We find the fingerprint. You knew of him before . Yes. Of course. You know, all the french people do not have the fingerprint on the database. How did he slip there . All of the big murderers, last time were also known before they were acting like that. Its a real problem. She said its a hell of a problem. But saying you cannot have a Police Person behind every person. Behind every person. Not even a person who they had their eyes on since 2010. One of the people, one of the terrorists now, one of the ones theyve identified with, the french citizen, they matched his fingerprint. They know who he was since 2010. They say hed been radicalized but never carried out a terrorist act. But they knew who he was. They couldnt watch him closely enough to keep him from doing this. Thats a hell of a problem. It is. And as jim was talking about, they have hundreds, like thousands of people who have either fought in iraq and syria and returned, radicalized by those who did. And to track them. Hes saying they say is 101. Youd have to have ten counterterror officials per person. Its an Impossible Task for this country which raises the stakes of what they will do to fight back. Saying this is war. You cant then say were going to do a few more air strikes. That is the thing. This has completely changed the conflict in syria. And not just for france, but for the world. Well, he is at war now, says francois hollande. Perhaps war in iraq and syria. But how do you fight it in france . There are no air strikes to do here in france. It has to be done with intelligence work and ground work. And no air strikes. And just to say, we are standing oen the street here. Standing on the street where behind us last night, people were out, having a friday night, right there. And you see it. You see that awning and it brings home the normalcy of what that moment