In murrysville, pennsylvania. Hes has the latest. This happened in a particularly vulnerable time at the school. Just the beginning of the day. Students were not in the classrooms. They were in the hallways. There were many heros in all of this. Two assistant principals who subdued this young man. When they did, he said he wanteded to die. It has happened again. This time a 16yearold sophomore alex hribal harmed with two eight to teninch kitchen knives. Someone yelled, i got stabbed. Reporter stabbing in some cases, slashing classmates and even a School Police officer. Panic just after 7 00 a. M. I was seeing people getting shoved into lockers. Thats whenever the boy ran past me and i saw him tackle someone else. And thats when everyone just started screaming and running out of the door. Reporter police arriving within minutes, the fire alarm sounding. Cha chaos. A lot of evidence of blood on the floors in the hallway. We had students running about trying to get out of the area. Reporter and there were heroic acts. The assistant principals who tackled hribal, then subdued him. Students who applied pressure to the wounds of their friends, never leaving their sides. The fbi descending on the suspects residence. Agents seized hribals personal computer, search for clues on what made him go on this rampage. Hribals father, clearly shaken, only had words for the victims hribals lawyer says this is completely uncharacteristic of alex and something must have set him off. This is a nice young man. Hes never been in trouble. Hes not a loner. He works well with other kids at school. What sort of kid is he . Hes a quiet kid who just sits in the back of the classroom. You dont hear too much from him. Reporter for parents here, shock. We saw the news and what did it Say Something about a bloodbath . You cant believe youre looking at that and its your school because its always somebody elses school. Reporter this is a very quiet idyllic sort of neighborhood and town. It is shocking that it would happen here. One thing that neighbors or s a threeinch knife. He had an eight to teninch kitchen life on him. He was holding it like this and stabbing into the lower part of individuals. One person saying that the boyfriend of a girl stepped in front of the way, taking the blow instead of her. Chris . Miguel, knives aside, we do hear that he was aiming for the chest as well. A lot of chest wounds, you know, the words that are coming out of you now weve all heard too many times. And the questions are familiar, but just as important as always. Why did this happen and how was it stopped . Were going to get answers to both of those hopefully today. Coming up on new day in a few minutes were going to speak with the attorney for this disturbed young man. Also, were going to talk to the superintendent of schools and the student in the hallway and survived the rampage. Well have all that for you coming up. The search for Malaysia Flight 370. Officials confirming just minutes ago that searchers detected a possible underwater signal in their search for the missing jetliner. That still needs to be analyzed but it is yet another promising lead. This would be the first ping heard and detected since tuesday. The search zone has already been narrowed to focus on where those initial pings were heard in the past week. Erin mclaughlin is live in perth, australia, with the latest on this news. Tell us more about the news that just came out moments ago, erin. Hi, kate, thats right. Australian officials confirming to cnn that the raaf orion plane picked up signals in the vicinity of the ocean shield from sonar bouys that were deployed. The acoustic data will need to be analyzed overnight but it is promising. Now, in addition to that very sensitive work that the ocean shield is carrying out with that americanprovided towed ping locator combing the water trying to pick up on the pings, they deployed these p3s capable of deploying 80 at a time, capable of detecting possible pings in the surrounding areas. This is significant because it tells officials here in australia that the batteries at this point they say are most likely associated with the black box pinger have not died. They are still deteching these pings that means they are getting more information to be able to narrow down a potential search field. And thats important for them to deploy the underwater Autonomous Vehicle on board that ocean shield, the american provided blue fin 21. The narrower the search field the easier its going to be for them to be able to gounds nooet the water and find the actual wreckage. Very promising developments here in australia. But again, theyre still while theyre saying theyre promising signals they do still need to determine whether or not these are, in fact, from the missing plane. Kate . Lets dig deeper on this latest news just coming in with mary schiavo and attorney who represents victims and families after airplane disasters. And david gallo, coleader in the search for air france 447 and director of special projects. Good morning to both of you. Mary, let me get your take real quick on what erin was just reporting. I hope you were able to hear her. Right. I believe this was the first time weve had a sonar detection, acoustic detection from one of the planes from the sonobuoys, what does it tell us . One that the badries apparently are still alive which is very, very good news. They extended their regulatory shelf life, if you will. But also that the sonar buoys are helping. Once the underwater submersibles go into the the water it will be weeks and not months. There have been other accidents where its taken many months after the pingings were picked up to find it. Here they want to limit that, narrow it down. Narrowing it down, david, is exactly the whole goal of what theyve been doing over the past few days since the past week since theyve had the initial pings. Talk to me a little bit about how sonar buoys assist in the search. When i started learning about them and they drop some 84 of them overnight i was a bit confused because they only can really they put a microphone down just some 1,000 feet when you have a tpl that can go down 20,000 feet. Yeah. The advantage of these buoys, the sonobuys is they can hang just below the thermolayer. Above that you can block the sound because the density of the water is different. These can be very quiet. Theres no ship at all. These have no ship attached. They are dropped by an airplane and thats fantastic. Just perfect quiet. The quiet is an important part of this, mary, because we have the ocean shield which obviously has been taking the lead in trying to track the pings and further pings. Weve also been told the hms echo was going to be moved into that area. I found that a little surprising just for the pure fact they wanted utter silence if possible. Well, but once they move it in they will shut down absolutely all unnecessary equipment to try to maintain the silence. Moving it in and getting in position will be noisy but then they can literally quiet down the ship just as it did with the ocean shield. The ocean shield had to do that as well. The thought with more ears, sonar buoys and the echo along with the shield, they dont know how long their luck will hold on with the batteries. Talk to me further about what kind of information this latest detection can offer. They obviously say they need more analysis but what kind of analysis are they going to go through right now to help inform their search . The most important thing is how many sounds are they hearing . Can they locate one source on the bottom . Can they locate both black box snes thats critically important because when they put that the blue fin 21 in the water theyre going to want to throw it like a dart into the bullseye. You dont want to take a lot of risks with that, with that piece of technology. Every time they get a hit or hear a ping they can narrow down that search zone. How much narrower would they prefer to have it . Of course they would like it to be just absolutely a bullseye but weve got the two pings 15rks 17 miles apart. I guess we could say thats large but its really small when you think about where we began. Thats right, kate. Thats where they detected the pings. So maybe the locations of the boxes are close together. Thats where the tpl was when they heard the pings or the sonobuoy was. They may be closer together. Ideally the pings would take them right to the location of the black box. Anything close. Compared to what we had to work with in the beginning, this is fantastic. You have this new today, mary. What do you do now . Do they move more bouys around or drop more in or does this assist in their triagulation as we heard about . They will use the assets they have there to listen and narrow it down. If they are still getting pings and they still havent been able to narrow it down then maybe more resources. For now theyre going to let those resources work. And theyre going to have to work quite hard. As we know, david, theyve got these batteries are running out. But this is promising, right . Very promising. Again, think of where we were a week ago when we had no idea where in the indian ocean the plane was likely to be. Now every single time they get another ping its adding more to the evidence that this is the spot. Improve the calculation. I want to talk about whats going to happen when we do send that blue fin down, what happens when we go under the surface to try to get eyes on whatever is down there next time we speak with you guys. Mary, david, thank you so much. John, over to you. Happening right now, Oscar Pistorius being grilled on the witness stand at his murder trial. Prosecutors trying to trip him up as he talks about his relationship with his girlfriend reeva steencamp. Pistorius admits he never told steencamp he never loved her and never apologized to her family in person. Were going to go live in the courthouse in pretoria in a few minutes. It has been quite a morning there. The clock ticking in ukraine. The government giving protesters who have taken over government buildings and called for succession 48 hours either to negotiate or face ukrainian forces. A short time ago the president there said protesters will not be prosecuted if they disarm and walk away. In the meantime, moscow is saying there is no reason to worry about the 40,000 or so Russian Troops near that border, saying theyre conducting military exercises. The u. S. Has accused them of stirring up protests and excuse to send its military over the border into ukraine. Intense manhunt under way in florida as police look for the man they say was behind a deadly car crash at a Day Care Center. Robert alice was allege idly behind the wheel went his suv hit another car pushing it into a Day Care Center near orlando. One child died. Another 14 were hurt. Police say it appears he ditched the suv and is now trying to get out of town. A congressional briefing today set to point the finger at russia for failing to give the fbi enough information about one of the Boston Marathon bombing suspects. The report is expected to say that Tamerlan Tsarnaev had raised suspicions at least two years before the attack but it was only after the attack that russia provided more details including a phone call where tsarnaev discussed islamic jihad. We are just one week away from the anniversary of that attack in boston. A little more than a week away until the next running in boston. It will be very important to be up there. Just like we covered when things were terrible, its now important to comp boston strong and show how far its come. Were looking forward to being there. So far this morning the news has been bleak. We need something good. A lot of pressure but im feeling good about where were going right now with meteorologist eindra petersons. You know theres rain but i have good news. Weve been waiting for so long. What a horrible winter we through. You can see the middle of the country. Down in the southeast, clear. That is good news because today is round one of the masters. Look at that. Gorgeous into the southeast today. Thats the beautiful weather there. Yes, you we know, there is some rain but it is light. Maybe up towards the front. By friday into the northeast. Clearing out in the northeast for the weekend. That is is key. The midwest will see showers over the weekend. A Second System behind it moves in. Get over the rain, look at this. We were talking about above normal temperatures even in the midwest after two fronts go through. No biggie. Even the northeast, front goes through. Who cares. Youre even talking about 60s out there. Even some 70s once you talk about d. C. Go farther down in the southeast, 70s getting close to the 80s. If you are going west though, it is hot. Maybe this time a little bit too hot. Record breaking heat. Over 100 degrees in many places spop thats the tough spot but overall everyone is warm and dry, kind of. At least by saturday and sunday. Thats the key there. Dry. All right. Thanks. Welldone. Bravo, my friend. I feel the mandate was met. Perfect. Something you dont here often days. Coming up on new day, everything we know about this teen stabbing suspect. Very important we understand why this happened, how to stop it Going Forward. We do know this community is in shock because no one who knows this kid can believe he did this. Whats his defense going to be in court . His attorney is going to join us live. Plus, the prosecutor hammering Oscar Pistorius in court, saying he picked on reeva steencamp and never told her he loved her. More on this brutal crossexamination coming up. Turn around every now and then i get a little bit hungry and theres nothing good around turn around, barry i finally found the right snack [ female announcer ] fiber one. I finally found maestro of project management. Baron of the buildout. You need a permit. To be this awesome. And you. Rent from national. Because only national lets you choose any car in the aisle. And go. And only national is ranked highest in car rental Customer Satisfaction by j. D. Power. aaron purrrfect. vo meeeow, business pro. Meeeow. Go national. Go like a pro. Hooking up the country whelping business run build were investing big to keep our country in the lead. Load we keep moving to deliver what you need. And that means growth, lots of cargo going all around the globe. Cars and parts, fuel and steel, peas and rice, hey thats nice Norfolk Southern whats your function . Helping this big country move ahead as one Norfolk Southern hows that function . Welcome back to new day. It is hard to believe that no one saw wednesdays high school knife attack coming. But thats what were hearing from teenage suspects parents, his classmates are describing him as smart, quiet, a typical, even wellliked kid. So how do we make sense of this . How does somebody change into something so ugly and terrible . Lets get more perspective from the man who will have to defend this suspect in court. His attorney, patrick thomasy. Mr. Thomasy, thank you for joining us this morning. Hopefully well benefit from your perspective on this kid. Whats your best guess as to why this happened . Were trying to figure that out. The first thing we want to do this morning is to get his parents to see him. This child left for school yesterday morning and thats the last time they saw him. This is a nice young boy. Nobody would expect this. This is not a dysfunctional family. They are like the brady bunch. These parents are active with their two sons. And were trying to figure out what happened. So were going to get some Mental Health experts involved with this and try to figure it out. Well, you know, its hard for people to see him as a nice young kid when he goes rampaging through the halls of the school with two knives in his hands. Obviously everything he did was not nice and the question is why he did it. Do you know anything about any history . You say get Mental Health involved now. Were they involved in the past . Was the kid bullies . There has to be something. There has he has never had any Mental Health problems whatsoever. Hes never been in a Juvenile Court system. He was a wellliked student. He wasnt you know how some kids refer to other students as weirdo weirdos. Hes not. Hes not a loner. He interacted well with other students. Were going to try to figure out what happened here. Obviously theres a problem. You just dont believe and go to school and do what he did yesterday. And the parents are horrified by this, naturally. This is not their son. They cant figure it out, either. But obviously there was some deeprooted problem somewhere which caused him to do this. Right now hes you know, hes a young kid. Hes frightened. Hes scared. Hes depressed. So were going to try to help him out and ill figure out what happened here. 16, he still has good reason to feel all of those things right now because imagine what the victims are feeling and their families after what happened yesterday. The digital footprint is going to be very important. Does the family know where this kid was online, what hes been saying, who he may have become there, what hes been influenced by . Yes. This wasnt a family or isnt a family that ignored their children. They were very cognizant of who they communicated with online. There wasnt any arguments or any beef that he had with any other student that were aware of. Ive heard these rumors about being bullied. I dont believe thats true. I havent had enough time to really sit with him and talk this through. I got to see him yesterday for about 20 minutes before he was arraigned and taken away to the juvenile center. But in the next few days well sit down and ill talk through this and try to determine where we go from here. Tell me about those 20 minutes. Well, you know, they had taken him to the hospital because he had some injuries himself. And he was frightened, sad, depressed. Sort of disoriented, quite frankly. Everything was happening so quickly. He had been in custody by the time i saw him for about 12 or 13 hours. And i didnt get to spend that much time with him. But i will do that today. Did you find the opportunity to ask him why did you do this . Well, im not going to you know, i dont want to share my discussions with him. Were going to fig their out down the road. Did he have a reason . Im not being rude. You dont have to tell me what it was but did he have a reason . Not that im aware of at this point. Well, thats the most troubling thing, right . Absence of any type of motivation is usually an indication of significant instability. Sure. So the question is what it is. It cant be nothing. It cant be a mystery. It cant be a one off. It never is, counselor. You know that. No, i know tha