assistant to george w. bush. she's been working the phones since this incident began. fran, i understand you have some new, important information. >> good morning, john and chris. yes. you know, among the pictures we have now found that the one that you'd like most to see this morning isn't in there. yesterday, at the boston press conference the u.s. secret service official stood up at the conference and said that fragments had been found, both embedded in walls in the surrounding buildings, and on rooftops. cnn learned this morning from a federal law enforcement official that on one rooftop in the area, they found the lid to the pressure cooker. that's a tremendous break for investigators. there's all kinds of information. the lid is likely to contain sort of trace elements that they'll be able to know better about the explosives, they may be able to find, as we discussed earlier this morning, latent fingerprints. there's all -- that's a treasure trove of information for investigators as they try to discern who is responsible, what was the motive, and how many