france after a night of terror. mass shootings, multiple explosions, and a horrifying hostage situation leave at least 120 dead. bloody scenes unfolding across the city of light. among the six different targets, a crowded soccer stadium, a sold-out rock concert, a restaurant. all of them packed with peoe on a friday night. what we're learning now about who may have been behind the seemingly coordinated attacks. while here at home, president obama reacts. >> this is an attack on all of humanity and the universal valulu that we share.

"nightline" will be right back. breaking news continuing to unfold in france as we comee on the air tonight. at least 120 people confirmed dead at this hour, as well as eight attackers. scenes of carnage at six different locations across paris. deadly explosions at a packed sports stadium. machine guns at a rock concert. these so-called soft targets all chosen to have the bloodiest impact on people enjoying a festive friday night out. carnage and horror on the streets of paris tonight. as ambulances continue to cart away the scores of wounded,

overwhelming hospitals. >> with all these patients, we try to save some. it was an awful night. >> reporter: parisians now reeling from the deadliest terror attack in that nation's history. >> we saw people running up the street. we turned around and ran for our lives. >> reporter: a highly coordinated killing spree. unprecedented and unimaginable. consisting of suicide bombs, shooting rampages, and multiple explosions throughout the city. >> i sat with one fririd and we immediately heard really loud gunshots. everybody dropped to the floor in confusion. >> reporter: at the center this theater, the bataclanan where the american band eagles of death metal was performing to a sold-out crowd. >> i was, you know, enjoying the concert. and the band playing, you know, they were in the middle of song. then all of a sudden we heard shots.

people were running away. then all of a sudden people on the balcony where i was sitting started getting up and panickina. and that's when iducked, you know, i wentt behind the seats and the friend i was with -- i took her hand and we kind of made our way to an exit. >> reporter: michael dorio's brother was performing onstage. >> they saw men with machine guns just kind of shooting at anything and everything. just -- t`e venue. >> reporr: the concertgoers trapped inside. >> everybody ran out in a panic. we all ran out in different directions. >> reporter: witnesses reporting the at@ackers screaming allahu akbar and syria. >> i saw a couple of guys woundeded. i saw a guy with a white shirt drenched in blood. >> i heard about 12 loud bangs. and shortly after, ambulances rushing towards the theater. i was able to follow some of them.

evacuating people from the second floor, taking them to this makeshsht hospital, makeshift hospital and cafe nearby. i saw people, you know, coming out, looking terrified, with blooddll overheir t-shirts. >> reporter: the french elite police storming the theater, dozens killed, including four terrorists, three from detonating their suicide belts, e shot by police. >> they had the equipment, they had locations that they had picked, and they picked friday night in paris to launch. so yes, all of those things are coordinated. probably b b their standards it was a successful night. >> reporter: in all, at least six separate attacks across the city of lights. bloodshed as gunmen opened fire on popular restaurants. charlotte brea was inside. >> i was holding on to a woman on the floor with me. i was asking her if she was okay, holding her hand.

breathing or she was struggling to breathe. as i could look up when i felt safe enough to look up, i realized there was a podol of blood surrounding her and i think she'ddeen shot in the chest. >> reporter: bodies draped in white sheets in the street. seth porges witnessing the aftermath. >> the first thing i see is a man with a towel or shirt wrapped around his bloody hand and bloodd dripping fromit. i see police with guns huddled behind vance. dozens of firefighters flooding the scene, blocking the ro. >> reporter: at talked defrance where the national team was playing germany in an exhibition match, more bombings. loud expsions rocking the stadium. stopping players in their tracks. french presidentnt francois hollande was at the game. >> translator: at first i thought it was a homemade bomb. there were rumors the stadium. it was going off next to entrance "e." was newsy.

it was very confusing inside the stadium. >> the crowd started moving. everyone started panicking. it was impossible to leave. trains were blocked, people everywhere, it's chaos in paris. >> reporter: thousands flooding the field. confused by what happened. amid the chaos, a ment of patrtism. >> reporter: fans singing france's national anthem as they evacuated the stadium. >> translator: paris has paid a heavy price in the face of terrorism. but we are standing tall and we will stay standing tall. the death toll is very high. the sites targeted are sites where pa rings like to go ouou where young people in paris like to go at the weekends and in the evenings. >> reporter: tonight france under lockdown for the first time since world war ii. residents ordered to stay homeme all public buildings closed indefinitely. checkpoints up at the borders. >> translator: france needs to

be strong. the authority of the state firm. >> one of the keys is going to be as they identify these eight dead extremists, what circle are they from? they're going t pull all of their phone records,heir social media backgrounds, all of that stuff to look at the possibility of who else is in their pool? >> reporter: a somber president obama offered support. >> we've seeee an outrageous attempt to terrorize innocent civilians. this is an attack not just on paris. it's an attack not just on the seople of france. but this is an attack on all of humanity and the universal values that we share. we stand prepared and ready to provide whatater assistatae the government and the people of france need to respond. >> reporter: french police

believe all eight tackers are volved are nowdead, killed by police or from suicide belts. the search continues for possible accomplices and answers. for some perspective on the global terrorism threat, joining me, abc's chief i iestigative correspondent brian ross. all the hallmarks of jihadi extremism. the big question on everyone's mind is who's responsible? >> absolutely. we don't know yet but we will know soon. with at least eightht suspects dead, authorities now have dna, fingerprints, and faces to match against terror data bases in both france and the u.s. and that process is already beginning. so far it has all the hallmarks of an isis attack. given the fact that there's some 1,200 isis followers or sympathizers in france considered to be french citizens or residentsts >> isis known for its sophisticated social media campaign. is it isis, al qaeda? i know there's debate under way. >> absolutely. in the last month or two isis followers s ve been c cling for

at that concert hall was a slaughter, a massacre of young people out to see an america rock 'n' roll band. nothing that isis or al qaeda hates most of than a bunch of people out to have a good time going to a soccer game, going to a concert, out for a few drinks with friends. that was the target tonight, very soft targets. >> decadent western culture. thank you for your updates and insights. coming up next on this special edition of "nightline," what tonight's tragic events in paris mean for homeland security ananwhat counterterrorism experts are saying about the string of recent deadly terror attacks. stay with us.m mary ellen, and i quit smoking with chantix. i have smoked for thirty years and by taking chantix, i was able to ququ in three months. and that was amazing. along with support, chantix (varenicline) is proven to help people quit smoking. it absolutely reduced my urge to smoke. some people had changes in behavior,r, thinking or mood, hostility, agitation, depressed mood and suicidal thoughts or actions while taking or after stopping chantix.

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the horrifying attacks in paris tight echoing across the globe. brininng thehreats we could be facing here on american soil into sharp focus. we're joined now by abc's chief justice correspondent pierre thomas. pire, clearly tonight's events having a ripple effect here at home. >> indeed. tonight u.s. law enforcement

hunt for clues to help the french figure out who is behind this nightmare. enemies. islamic radicals targeting the western way of life. tonight france feels only a short distance away from the u.s. homeland. law enforcement officials here worry that the attack may not be isolated and they're stepping up security. there's complete urgencycy in finding out who is behind this. the critical question tonight, who did it? on the short list of possibilities, al qaeda and isis. in part b bause of recent history. >> the tactics used in this specific attack are very similar to what we have seen in the past in attacks carried out by al qaeda or isis. it's too early to tell for sure who conducted it now but i i wouldn't surprise me at all if it was either an al qaeda affiliate or isis. >> reporter: just last january, there was a spree of terroro in france. two others forced their way into the office of the french satirical newspaper "charlie

injuring nearly a dozen more. in this video al qaeda in the arabian pepensula claimed responsibility for the assault and say one of the two terrorist brothers traveled to yemen to receive training and funding from the al qaeda affiliate there. another gunmanook several hostagag in a supermarket near paris. authorities found evidence in the gunman's apartment he was connected to isis. his partner fled france and is believed to have traveled to ria. laictiond has been looking foror ways to do a large-scale attack for years. they most recently fixated on blowing up commercial airplanes since 9/11 when they conducted the most devastating attack in u.s. history. in recenen months al qaeda has been working on a so-called undetectable bomb that could get past airport security. t perhaps the most active terror group on the planet right now is isis. consuming huge swaths of land in iraq and syria. forming the so-called islamic state. thousands of foreign fighters flowing into those countries

with a social media campaign unprecedentete recruiting people from around the world, including in the u.s. and europe. more than 1,500 french citizens affiliated with isis, one-quarter of the european total. this past july, a french-speakakg member of isis appeared in this video threatening the group will bring slaught tore france. >> there have been a relatively large number of individuals from france who have t tveled to syriri joined with the groups in the conflict there, and then have come back home. just as extreme or even more extreme than before they left. >> reporter: this "new yorker" magazine article described a region called department 93. a large area of disaffected african and arab populations who feel cut off from french society. according to the article, estimates are 60% of french prison inmates are muslim. prime targets for jihadists. >> one of the challenges that the french government and the french people will face in the daysysahead will be to ensure

that hate crimes aren't committed against people who had nothing to do with this attack. >> thanks to pierre for tracking the moving parts in this fluid situation. joining us former white house counterterrorism official and abc news consultant richard clarke. there are reports the intelligence community was not picking up any increased chatter leading up to the attack. what does that tell you? >> intelligence community officials are worried tonight and they have two theories. the first is that the french intelligence people are just too overstretched, there are too many suspects for them to follow in detail and listen to all of their phone calls. the other theory is that isis, if this is isis, may have figured out ways to avoid western intelligence detection. they may be employing people who are not known to western intelligence. and that would be very troublesome. >> and y're beginning to see signs, a pattern, in fact, of recent attacks outside of syria, outside of the region?

attacks in iraq or syria. but over the last week we've had three major attacks that could be isis. first the russian airplane downed in egypt. second, yesterday, the first major attack in beiru in years. one directed against isis' foes, the hezbollah group backed by iran. and then this one today. it could well be that the external arm of isis, w wch we have knono for a while exists, but have never seen them do anything, it could be that that arm has finally been activated and has executed three planned attacks all in one week. >> and on the heels of that coordinated attack, an attack in paris, six separate attacks unfolding simultaneously. does that suggest to you perhaps a new threat level? >> it's certainly a very complicated attack to pull off. it suggests the personnel involved in planning it and some

in executing it must have received training outside of france. most possibly in syria or iraq. which once again brings us back to isis. but what that mians for the united states is unclear because there's not a widespread group that isis can reside in here in the united states. the way this is in france where there are thousandsds of peoplpl with isis sympathies and hundreds of people who have gone to syria and iraq. >> and brian ross telling us that the forensic investigation is already well under way. at, if anything, might they learn from the investigation that might help stop the global threat of terrorism down the road? >> well, i'm not sure the investigation will tell us anything about how to stop it. except if we try to f fus not on who theeeople were but why they were converted. why were they converted to this fundamentalist view of islam? this violent view of islam. the only two ways that we can

stop this threat in the long term are, one, by going after them in their headquarters in their homeland, and destroying their organization, destroying their leadership. but two, going after them ideologically, cutting off the roots, getting to have our arab friends do the work of convincing other arabs that this is not true islam, this is in fact what the muslims call haram, not religious, it is in fact a sin. >> richard clarke, always grateful for your expertise. when we come back, powerful symbols of solidarity from across the globe. president obama and a chorus of world leaders standing firm with paris after tonight's deadly attacks.

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infrance, dawn breaking on a nation reeling from mass tragedy. at least 120 confirmed dead in addition to eight attackers and the search is on for possible accomplices. here a a home, president obama reacting quickly to the devastating news as world leaders expressed outrage and sorrow, saying france is not alone. >> any of us could have been at that concert because that area is where all the youths of paris hang out. so that's what's really getting to me is it could have been us. we were meterer away from the shots, i would say. >> these people are obviously injured, a lot of them had blood on their faces, on their hands. >> nobody can justify what they did. i mean, it's awful. you can't just go into

shoot innocent people. >> translator: we have to be compassionate and we have to bee united. long live the republic, long live france. >> the french people have stood shoulder to shoulder with the united states time and agagn. and we want to be very clear that we stand together with them in the fight against terrorism and extremism. >> people who were alive just a few hours ago, their lives have been changed. doesn't matter if it's paris or britain or anywhere else. something likekehis happens, it's very tragic. >> the american people draw strength from the french people's commitment to life,

>> the french anthem. thanks for joining us tonight. our thoughts are with the people of france. we'll have the latest developments overnight at abcnews.com and gma it seems today that all you see is violence in movies and sex on tv but where are those good old-fashioned values on which we used to rely? lucky there's a family guy lucky there's a man who positively can do all the thihis that make us laugh and cry he's... a... fam... ily... guy! say,y,ou fellas know if jerome serves dessert here? i got a real hankering for pudding. that's so weird. i was just thinking about pudding on the way over here.

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