cooker with shrapnel, including nails, bb's and ball bearings. the second device is so badly fragmented, it is simply described as a metal container. it's too badly damage to do have positive confirmation. in both cases the type of low explosive and mode of detonation are still being determined. the battery is identified with the types of items that you would typically see in a retail department store as found in toys, a controlled cars, trucks. and the maker has told us that they make about 10,000 of these batteries every year. tens of thousands of these batteries. so that may not be a good investigative threat at this point, bill. >> bill: that's interesting. what are we learning possibly about where the bomb may have been made? do we have much on that now? >> fox news is told by an investigative source is using a low explosive was like hee assembled close to the blast side. the "wall street journal" is reporting that the f.b.i. and boston police are canvassing