Still unknown. Overnight the first and so far the only physical clue has popped up. A search team saw what they believe is a floating piece of debris. Several boats are on the scene now. No word yet on what theyve found or whether it belongs to that plane. With no answers, Airline Officials and expert pilots can only guess at what happened. Did that boeing 777 break apart in flight . Or did it crash into the sea . The confirmation that two passengers got on that plane with stolen passports is now forcing investigators to put together possible terrorism scenarios. Cnns jim clancy is in kuala lumpur, malaysia. That is where flight 370 originated. And, jim, two full days. Zero contact with this airliner. How does an airliner how does a jet plane simply just disappear . Reporter well, thats what officials here were at the Briefing Center right next to Kuala Lumpur International airport. We expect to hear from officials in about five hours time. But thats what theyre trying to answer right now. What happened to flight mh370 . As we look over the entire scene there are clues. Plenty of clues have come around. Theres an oil slick that was found. There are repeated reports of debris. But every time things are checked out, we are told that this does not match this airliner. This is not debris from that airliner. They are continuing to check the oil slicks that were found to determine if that could be from the fuel that was onboard the illfated flight. Right now we are told by malaysian officials the search plane should be warming up, preparing to go and fan out over the South China Sea in the search for that wreckage. And as you noted, some vietnamese search boats are going to be joining in. They will be trying to ascertain whether that debris that i believe was spotted by air is actually debris from the missing airliner. But we wont get word on that for at least an hour or two. Officials here have told us theyll bring us into that Briefing Room thats just about 100 yards behind me and inform us as soon as they get any word. Theyre going to give us a regular update, as i said, in about five hours time. Deborah . Clearly what theyre doing in that area, as you described, is theyre mapping the waters. Theyre trying to sort of section off each piece to sort of rule it out. Have anybody from the malaysian government yet used the word crash, or are they still sort of just waiting till they have the details or any details for that matter . Reporter well, out of respect for the families, theyre trying to wait. But to be honest, they know what the situation is. As i understand it, they have informed the families, prepare for the worst. Because, frankly, people know when an airliner has been gone this missing, something terrible has happened. What exactly happened, though, is also important. Where it happened. Many of these relatives have already been told that should they find some wreckage, they will be taken to the crash site so that they can at least feel closer to their loved ones who have been missing now for going on three days. This has been a trying time for malaysia. This is a trying time for the families. We saw a tweet coming in from the Prime Minister, razak, that really thanked the neighbors, thanked the friends. Saying in a time of crisis, this is when you saw who your friends were. Theres solidarity. Singapore, vietnam, all of the surrounding countries like indonesia have all come in and have all volunteered aircraft. Theyve put planes into the search. This has really been a regional effort. Now, of course, youve got 14 different nations. There are nationals who were aboard that aircraft. So this is a regional concern. People realize that, you know, it could have been them. It could have been any one of these countries that is affected by this. And now is the time to come together, deborah. All right. Jim clancy, thank you so much. So much uncertainty and obviously that just breeds even more fear. All right. Thank you so much, jim clancy. As i mentioned just a couple of minutes ago, the airline has confirmed that two of the people onboard that missing flight checked in and boarded with passports that had been stolen. That were nottish shoo issued t. The passports were stolen separately, more than a year apart. Investigators are actively looking at this very curious detail. It appears they were still in the same country. Tom fuentes can help shed light on the stolen passport issue. Hes our Law Enforcement analyst and former assistant director of the fbi. Tom, for so many years, this has been a fear. Somebody is going to get onboard that plane who simply doesnt belong there. The whole stolen passport issue. Is this now coming to roost . It could be, deborah. This could be something that that has nothing to do with the reason that airplane crashed. Or it could be that the two people that got on did have something to do with it. We dont know. It may be actually a long time before we can confirm one way or the other. 1 billion people a year worldwide board aircraft without their travel documents being screened. Thats just a fact of life right now. Secretary general of interpol, ron noble, has been pushing for years to get governments to check the outbound passengers as well as the inbound when you come through passport control. Many countries still do not do it. Here in the, the United States makes 240 million inquiries per year into the interpol lost and stolen travel Document Data file. So that work is being done here. But its not being done everywhere. In this particular case, both of those passports were in interpols database. But no inquiry was made prior to the aircraft taking off. Thats also whats so frightening. We know that they bought the tickets at about the same time. They paid about the same price. Their itineraries were different. But they each paid in thai currency. This has to be a little bit more than coincidence. What is your sort of, you know, investigative background telling you . Well, of course, that part is more than coincidence. The two passports were also stolen in the same neighborhood of phuket, thailand. A resort town on the indian ocean. One year apart, but in the same neighborhood. Then, you know, more than a year later, both passports are used to simultaneously purchase two tickets for some for two people to board that aircraft who were not the people listed on the passports. The fbi has offered the malaysian government help. Usually this is an offer that the fbi makes. What can they actually do . Is it more on the investigative side or is it the search and recovery or rescue . It would be on the investigative side. Looking at the people. Looking at the circumstances. Queries databases. But the fbi has agents already assigned in the u. S. Embassy in kuala lumpur and in the embassy in beijing and in the embassy in bangkok, thailand. So those agents are already on the ground. And would have been involved in helping each country from the very beginning, from the time that aircraft disappeared. So sending more agents there may happen to help those agents, you know, looking into the databases, examining the fbi files. But that work is already being done from there to the u. S. Information systems of the fbi and other u. S. Law enforcement intelligence agencies. And you also have to believe that, in fact, they are probably trying to find the actual identity of these two passengers. Because clearly that could lead to an even bigger nexus if, in fact, that is what it ends up being, that is terrorism. All right. Tom fuentes, we appreciate you. Thank you so much. Youre welcome. People who knew the 239 passengers and crew members aboard this flight are truly devastated. Not knowing what happened to their friends and loved ones. The airlines manifest shows the passengers from 12 countries. 20 of them worked for a Company Based in texas. Cnns nick valencia learning more about the people onboard. Nick, what do you know . Deb, new information into cnn. Youre talking about this austin, texas, based Technology Company called freescale semiconductor. Earlier they sent out a statement to the media saying 20 of their employees, 12 of them malaysian nationals, eight others from china. Now, this companys technologies plays a prominent role in the Automotive Industry among other things. That statement, i want to read part of it they sent out to the media said, at present we are solely focused on our employees and their families. Our thoughts and prayers are with those affected by this tragic event. 239 people on this plane, deb. We are learning more about one of them. From right here in the United States. Originally from northeast oklahoma, phil wood was on that plane. His friends describe him as a humble man. One of a kind. He was a globe trotter, loved to travel. He worked for ibm. That was a job that took him all over the world. It was a passion that was sparked for him very early in his age when his family moved to germany. Earlier our affiliate koco caught up with the Vice President of the university whos a family friend. They are just devastated at the thought that he could be gone. Of course, its not known. And its very unclear right now what happened to that flight. Malaysia flight 370. A lot of people interested, particularly those that have been affected by this. Social media playing a big part in this, deb. There is a Facebook Page out there if youre interested that has about 1,000 likes already. Youre looking at it right now. They say r. I. P. To the victims, were calling them possible victims because we just dont know and dont have firm confirmation of where this flight is and what happened to it. Harrowing accounts and stories coming out of this, out of kuala lumpur as our correspondent jim clancy is there talking about. The need for prayer. The need for hope. All these families that were impacted, affected. Just holding on to their prayers and hopes. Deb . Yeah. Holding on. Clearly the pain for them just has to be absolutely unbearable. Nick valencia, thank you. You bet. And terrifying moments for a pilot and a parachutist. All caught on camera. Weve got the stories behind the pictures coming up. Plus, World Leaders trying to solve the crisis in ukraine. Is the key figuring out what president putin is really up to . A live update up next. Stay with us. Thats insane. Yep, and you can customize it. I can download anything i want. [ girl ] seriously . Thats a lot of music. Seriously. Thats insane. 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You can afford a sleep number bed, you cant afford another mediocre nights sleep. Know better sleep with sleep number. Well, tensions are on edge in the ukraine crisis. But so far weapons in the crimea region of set next week on possibly seceding from ukraine. Just cutting off ties and joining russia. Russian president Vladimir Putin defended the crimea vote i want to bring in cnn internationals Michael Holmes in kiev, ukraine. Michael, what are you hearing about possible movements by prorussian forces in crimea, the ones who took over crimea . Reporter yeah. Not really movements, per se, deb. But theres definitely more of a presence, a buildup, if you like. Some Ukrainian Military insulations that remain blockaded by armed and uniformed prorussian men. Theres certainly been an increase in recent days in things like roadblocks manned by a rather odd assortment of men. Some of them in uniform, some not. But many of them armed to the teeth. You see cars being searched, people intimidated, having their papers examined, their luggage searched. Remember, this is not while crossing an international frontier. This is while in ukraine. Just in crimea. Now, we also have confirmed that six Ukrainian Television stations have had their signals blocked in crimea. And replaced with russian television. You could call that an information monopoly going on. Deb . So theyre keeping people out, people who dont arent supposed to be there. Theyre limiting access to media in that area. How are people in the nations capital, kiev, reacting to what is going on there . Do they fear that that this is just a disastrous outcome . Reporter yeah, they do. Theyre very nervous about what happens after this referendum, which is less than a week now. You know, they were pleased with the revolution that went on in the square behind me and led to the ousting of the hated president viktor yanukovych. But they didnt expect part of their own country, crimea, would then hold a referendum that could see it become part of the russian federation. Quite frankly, theyre aghast at that prospect happening. Pretty amazing. They kicked out a president that was friendly to the russians. Now they may lose part of their country because that part wants to align with the russians. Michael holmes for us there in kiev, thank you. President obama wants to meet face to face with the top ukraine leaders scrambling to keep the crimea region from slipping further under russian control. Correspondent erin mcpike has details on the meeting. Interim ukrainian Prime Minister will travel to the United States to meet with president obama on tuesday. The Prime Minister has said the vote crimea intends to hold next sunday, a referendum to secede from ukraine and join russia, is illegitimate. President obama and several european leaders agree. What if that referendum is successful a week from now . President obamas Deputy National security adviser, tony blanken, was on cnns state of the union. He made a declarative statement about how the United States will react. If theres a referendum that moves crimea from ukraine to russia we wont recognize it nor will most of the world. Reporter former Vice President dick cheney warned about the dangers to the United States with putins continuing actions this morning. Weve got a much bigger problem if he decides to go further. If he decides to take part of eastern ukraine. Were in a situation where its not just about crimea and russia. Ukraine and russia. The u. S. , even. On a worldwide basis, potential adversaries and friends are watching how the administration handles this. Reporter republicans on capitol hill have stepped up their criticism of president obamas handling of the situation in recent days with some calling him feckless. At the same time, the white house is upping the rhetoric against russia and was pushing all of the things president obama was doing over the weekend while he was on vacation to make some progress on this crisis. Erin mcpike, cnn, washington. Lots to watch. Well, the question, how is a handcuffed man shot in the back of a police car . Officers say the victim shot himself. Were Digging Deeper into the moments before the shot was fired. Plus, the story behind these incredible pictures. I will say, everyone is okay. [ male announcer ] she wont remember this, being carried in your arms. But after a day spent in the caribbean exploring mayan ruins and playing pirates with you in secret coves, she wont exactly be short on memories. Princess cruises. Come back new. [ female announcer ] plan your sevenday cruise from just 549. Call your travel agent or 1800princess. I takbecause you cant beatrning for my frzero heartburn. N. 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Amazingly both survived with only minor injuries. Keeping my feet on the ground. A louisiana man allegedly kills himself while in the custody of the iberia Sheriffs Office. State police are investigating. The mans family is demanding more. Rosa flores