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That. but the investigation will proceed. they will look at the forensics at some of these recovered devices and they may be able to see the signature of the explosives, are they similar to the type of bombs used by say al qaeda or other groups. that may start to provide some answers. >> i heard you say earlier the fact these weren't big devices would perhaps suggest it isn't an al qaeda operation, that they would go for a more dramatic impact with the devices. also, there are these ball bearings we now know have been used. any significance to that? >> well, you know, piers, here in new york, ...

The signatures, the way that these devices were put together, how they were made, but also the unexploded devices because they could have fingerprints. they could look for the make of these devices to try to trace where the items came from that put it together, the containers they were in and that kind of thing. so a lot of work going on right now by investigators. anderson? >> interesting, interesting. couple different theories there from law enforcement personnel. appreciate that. fran, in terms of ieds, u.s. officials, u.s. authorities, united states government, has learned so much about im...

There's any indicators from past intelligence or current reporting that might give investigators a better sense of who is behind this. >> and what can you tell us about the explosive devices themselves? were they sophisticated? were they crude? and can we infer anything at all about who did this from the kind of device they used? >> it's difficult to say right now just from the pictures. but what is clear is that these were probably -- and i say very generally probably, that these were mid-sized backpack bombs. a large suitcase bomb could carry up to 50 pounds of explosives and do a significan...

Of fomenting the uprising against him. saying the young protesters were given hallucinogenic drugs by osama bin laden, that something was slipped into their nescafe coffee. we met many protesters, young and old, steadfast in their demands. >> we want him to banish. he killed our brothers. he killed our families. he arrested our people. >> reporter: despite the fury being directed at gadhafi by these protesters for decades of oppression, this is very much a celebration. these people feel like they've already won. they carried the red, black and green colors of the pre-gadhafi monarchy. the flag...

Afzali pleaded guilty about phone conversations, with this man who i'm sure you recognize, naijbullah zazi, accused of planning to detonate backpack bombs and we've gotten many details about exactly how extensive the plot was and they say it was the most serious plot since september 11th, and it would have explode bombs in new york city subways and, this man is connected to that, the authorities believe and two other men, suspected to have been part of the plot already pleaded not guilty. bill: in a moment we'll get back to the jobs number, and see the impact on the economy today and we might ...