He was a student in a manchester suburb. He was studying business and management. Had not been attending his lectures this year, which is perhaps unsurprising. People on campus didnt know very much about him. He wasnt involved in social University Life as such. One family friend told cnn that he had been sort of a loner as a kid. That he seeped qui seemed reclu. He started to wear islamic robes instead of westernstyle clothing. He had grown his beard long. The main thing authorities are trying to ascertain at this stage, anderson, is whether he was acting alone or whether its possible that there was a Larger Network at play here. I think the fact that explosives were involved, the fact that this wasnt such a crude kind of improvised attack but appears to have been more coordinated, potentially sophisticated. Thats what has authorities here concerned. What are authorities doing for those concertgoers and family and friends unaccounted for . We had an interview at the top of the last hour with two parents who were still trying to find out what happen happen hap daughter. Reporter i think authorities are cognizant of how agonizing it is for those parents, for any friends who are not able to find their other friends, their family, their loved ones. The arena behind me, which now it looks like something of a ghost tone, it was absolutely jam packed. It was sold out. Thousands and thousands of people were attending this event. There is still sort of prevailing sense of a little bit of chaos in terms of people not being able to find each other, authorities have set up hotlines. They have told people to many parents to stay at home so they can be near their phone but to keep in regular contact with authorities. Of course, there is always the somewhat grim process, anderson, as authorities and Forensic Experts try to go through, identify the dead, make sure that they have the right people, the right identification so that the next of kin can be notified, anderson. Stay with us. I want to bring in former fbi supervisor, author of anatomy of death, from the death of bin laden to the rise of the Islamic State. Uk officials are saying the making of the bomb took planning. Obviously, the target of the attack, knowing what time the concert was out, that took a certain amount of research, clearly. This wasnt the person just wandered there. How does an attack like this happen without some sort of red flags popping up beforehand . Well, you know the more people who know, the more likely it is that word can leak out. Absolutely. This is probably one of the reasons that they raise the threat level in the uk to critical. We still have crucial information not known at least to us. Why is this individual operating pinned e independently . I dont think so. It appears he had help. Look at the bomb itself. Reportedly, he used an explosive vest, suicide vest. Suicide vest cannot be manufactured by watching a video by isis or reading inspire magazine as we have seen with the boston bombers, for example, or here in new york the chelsea bombers. Who helped him built that vest . However, the vest by itself is not conclusive evidence of other peoples involved. I think investigators have an idea about the materials and the other components that used in manufacturing that vest. Devices like this have a signature. Usually a person who make absolutely. Has a particular way of making it. If you know that, you can track what materials are you use sng a useing . Are you using military or crude explosive material that you build in your mothers kitchen as al qaeda and isis tells these guys to do . Theres definitely a more level of sophistication in this attack. Other crucial evidence that we dont know yet, at least publically, was he in contact with supporters or members of the Islamic State . What kind of contact . Did they inspire him h . Was he trained in the uk . Was he trained overseas . Was he trained during some of his visits to libya, for example . A lot of information are not known yet. I dont believe this information is even known for the British Police and the British Intelligence services. Thats why they believe now based on the evidence that they have, based on the forensic evidence of the bomb, based on the complexity that you mentioned of the attack, that there is a wider network. Thats why the Prime Minister raised the threat into a critical level. There had been an arrest earlier in the day of a 23yearold who authorities said may have had something to do with it. Is there more information about that person . They are increasing are they increasing security at specific venues, venues popular with kids and families . Is it more across the board a higher profile of police and military . Reporter the impression that were getting, anderson, is that its not going to look like suddenly you are going to see military heavily armed soldiers kind of flooding the streets. The military presence will be somewhat subdued. They will be acting in concord with the police. Essentially, just bolstering the security presence on the ground in the capital of london, also in other major cities while the threat is still elevated to this critical level. I should hasten to add, for our viewers, anderson, that the critical level has not been raised that high sorry, the Terror Threat has not been raised to critical for nearly a decade, since 2007 when a man tried to ram his flaming car into the doors of scotlands airport. Its clear that authorities do believe that there is potentially a risk of an imminent attack, as for the 23yearold who we know was arrested today in southern manchester, authorities not yet releasing any more information about him. We know that there were at least two different raids, one of them on a house believed to be connected somehow to the bomber. At that house there was a controlled explosion. Again, we dont know, was that just a suspicious something or other or was it actually more explosive materials that needed to be detonated in a controlled m manner . Thanks very much. Earlier today, i spoke with phil dick. He dropped his daughter and granddaughter off at the concert. He and his wife were waiting to pick them up when the bomb went off. Its strange to call phil one of the lucky ones given what he saw and what he described to me, which you will hear. His family survived. Here is our conversation. Phil, you and your wife will dropped off your daughter and granddaughter at the concert. You were waiting to pick them up. Can you tell me what happened then . Where were you when the blast went off . We were in the foyer of the manchester arena. In the next thing, theres a flash and an enormous bang. How far away were you from that . No more than 30, 40 feet, maximum. So you not only heard it did you see the explosion . Yeah. We saw the explosion. We felt the explosion. It knocked us to the ground. The explosion knocked you and your wife to the ground . Yes. Then what happened . We picked ourselves up. I helped my wife up. There was smoke everywhere. And as the ringing in our ears subsided, it was it was then you hear the screaming and the crying. We looked around this thick acrid smoke. Theres ash falling like black snow. There are a lot of people injured and hurt all around us. You must have been terrified and terrified not only for your wife but for your daughter and granddaughter. All we could think about was our daughter and granddaughter. It was right around the time when we were expecting to pick them up. So we didnt know if they were there just coming through the doors. So we moved forward and out of the smoke came this young girl clearly seriously injured. Clearly in distress. My wife just rushed forward. Do you know how old she was . She was 14. My wife is screaming, my babies, my babies, my babies. I said to her, just look after this young girl. I will go find them. I promise you, i will find them. I went back in to the foyer. I didnt find my daughter and granddaughter there. I checked every Single Person to see whether it was our daughter or granddaughter. Thankfully, it wasnt. Your wife is back with the 14yearold girl. And you have realized that your daughter, your granddaughter are not there. Were you able to reach them on the phone . After about 20 minutes, yes. But up until then i checked everybody. I knew they werent there. I went back to my wife. We were comforting and aiding the young girl as best we could. Applied pressure to the most the worst wounds that we could see, which were to her shoulder and her face. Her hair was all burned. The bag she had around her shoulder had melted into her hair. The plastic of a bag had melted into her . Into her hair. Was the girl able to talk to you . Were you able to try to reach her family . Yeah. We managed to get her name. She managed after a little while to tell me her home phone number. I was able to call her mom and let her know her daughter was alive. Oh, my god. She passed it on to her husband. The little girls dad. I was able to speak to him on the phone. With the help of the police, both inside and outside, eventually got him in. Reunited with his daughter. This was quite a while later. Probably its more than an hour after the blast had occurred. Really, you were tending you and your wife were tending to this little girl for as much of as hour . Yes. With the supplies you had been handed. My wife is a heroin. I cant say whether she did, but i believe that she possibly saved that young ladys life. You have been able to find out about her condition, how shes doing . Shes serious but i believe shes had a number of visits to the theater and maybe more coming. Shes okay. Shes going to be okay. Its extraordinary that you and your wife had the presence of mind even in the midst of fearing for your own family to care for others. Well, you just when you are a parent, it kicks in. You look after you just look after people around who need looking after. Phil, thank you so much for talking to us and more importantly for what you and your wife kim did. Just extraordinary. I wish you the best. I hope that little girl recovers soon. Im sure she will. Thank you. We have one of the sad new developments that we mentioned in the beginning of the program. It concerns the family of Olivia Campbell who were pleading for information about their daughter. We interviewed them an hour ago. Her mother has posted on her Facebook Page word of her daughters passing. The posting reads, rip my darling precious gorgeous girl, Olivia Campbell, taken far, far too soon. Sing with the angels and keep singing. Mommy loves you so much. Well be right back. Whether youre after supreme performance. Advanced intelligence. Or breathtaking style. Theres a cclass just for you. Decisions, decisions, decisions. Lease the c300 sedan for 399 a month at your local mercedesbenz dealer. Mercedesbenz. The best or nothing. Fotheres a seriousy boomers virus out there thats been almost forgotten. Its hepatitis c. One in 30 boomers has hep c, yet most dont even know it. Because it can hide in your body for years without symptoms, and its not tested for in routine blood work. 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Single. One. Why . For the love of hot dogs. With threat levels and security tightened in Great Britain and here at home, we want to take a deeper look and what the men and women in charge of keeping us safe have on their plates right now and the steps they are taking. Joining us is someone who had that responsibility, richard clark. Who warned the Bush Administration about an al qaeda attack before 9 11. He is the author of a number of incredible books. Thanks very much for being with us. Great to be here. When you see this attack, there was security at this arena. They couldnt get a device in. And yet, as we were discussing before we went on air, outside of any secure environment theres people waiting, cueing to get in or grouping as they come out. No matter what you do at a big venue theres going to be a crowd, no matter how secure the access is, theres going to be a crowd outside waiting to get in. Thats true at airports where people line up at counters before they go through tsa. Its true at sporting events. You can do some things in that perimeter area. But you can never make it as secure as inside a hard target. You cant make security perfect. When you hear as details emerge about who this person was who carries this device to that location, born and bred in a Second Generation his parents came from libya. He traveled that. Did he have contact there . I feel like we hear this time and time again of people who were born in england, born in paris and yet thats the pattern. The people who become terrorists in europe are not refugees. Theyre not people who have been born in the middle east and come here. They are people who are disaffected citizens of their own country. The country of their birth. In europe they live in islamic ghettoes. Its not a homogeneous society. What causes a kid to move from being sort of radicalized to being willing to give up his life and kill children . What motivates him . Part of it is this crazy ideology. But part of it is a sense of victimization, too. The president the other day said we have to drive them out, he said three times. Its not that easy. If it were that easy, we would have done it. We have to deal not just with Police Tactics and intelligence tactics but we have to get at the root causes. It does seem the president referred to this person as a loser earlier today. Often when you look at the pattern of their life, they are petty criminals who havent done anything. They dabble in drugs. Were not particularly religious until just before the attack. They have this conversion to being highly religious or what they think is religious. Then they will do the attack. It seems like it almost gives their meaningless life some sort of they are no longer just some petty criminal. Theyre a terrorist. Theyre a martyr. Thats exactly whats going on. If society can offer people an alternative pathway, employment perhaps, meaningful life, education, a chance to move up, you are not going to see as much of this. Thats the problem in germany, in france, in the united kingdom. Thankfully, its not the problem here. As isis loses on the battlefield and they have strongholds in syria and raqqah. But is there it seems like they are encouraging people to stay where they are and do what they can. Last two years, thats their message. Stay at home. Its too dangerous to come here. If you arent here, dont come. You can get a truck and you can drive into a crowd. You see in the United States, for example, i was at the Boston Marathon this year. All along the route, big, big trucks blocking all the side streets. Out of fear that someone would just go and get a truck and drive it into the marathon. Can you compare al qaeda to isis . Isis is more effective. Isis is more effective . Much more. In getting people and reaching out to people . In recruitment. Much, much thousands more people have been in isis than ever were in al qaeda. Many of them have been killed. Very large number of them have been killed in iraq and syria. But they recruited a large army. They occupied cities in libya, in iraq and in syria. Al qaeda never occupied a city. This is you think of isis or daesh, its al qaeda 2. 0. Their ability to connect with individuals in the United States more advanced. Far more advanced use of the internet to microtarget individuals, coach them, bring them along and activate them. Richard clark, i appreciate it. Its heartbreaking to think about the families tonight whose kids never came home from that concert. More on those who lost their lives ahead. W. That not only made a a big first impression. But was designed to withstand sunlight this bright. This bright. Or even this bright. If a paint could protect your doors color against the strongest uv rays. It makes you wonder. Is it still paint . 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He was 26. Georgina callander was studying health and social care. S saffie rose was 8 years old. Many of the fans are teenagers and younger. For some it was their first time going to a concert or going just with their friends. Randi kaye has more. Reporter teenagers and Young Children desperate to get out alive. Ariana grandes young fans suddenly targets of a suicide bomber. There was a little girl literally in front of me who was that small. She had to stand on her seat just to watch the concert. Reporter for so many young fans this was likely their first concert without their parents. Imagine the chaos as the bomber detonated his explosives as kids made their way towa