kitchen. in one of those photos you can see a cluster of these teeny tiny but dangerous bbs that were clearly blown out from this pressure cooker, and, you know, made their way inside the skin and muscle of a lot of victims along the finish line in boston on monday. the fbi saying that the second bomb was also in some type of metal container as well. >> also new this morning, boston area hospitals have released at least 100 of the 183 people injured in monday's attack. that's wonderful news. >> we are also learning more this morning about the third person killed. a chinese graduate student who was studying at boston university, one of the wonderful colleges around her. we are respecting her family's wishes and not releasing her name at this time, but this shows you the international scope of this tragedy. we want to get the latest on the investigation going on all night. we are joined by national correspondent susan candiotti right here in boston.