← All LocationsDirectDirect Examination - Jeffrey Rolands Jeffrey Rolands Steven D. Mellin DirectDirect Examination - Jason Costello Jason Costello Nadine Pellegrini DirectDirect Examination - Paula Ernst Paula Ernst Nadine Pellegrini DirectDirect Examination - Sarah De Lair Sarah De Lair Nadine Pellegrini CrossElena Graff - Cross-Examination Elena Graff William D. Weinreb RecrossElena Graff - Recross-Examination Elena Graff William D. Weinreb sidebarArrest Photo Authentication and Renewed Evidentiary Requests sidebarRule 29 Jurisdictional Exemption and Proposed Additional Evidence sidebarJurisdictional Proof: Victim Testimony or Stipulation
Crime Scene
Scene A
Investigators designated the first explosion site, in front of Marathon Sports at 671 Boylston Street, as Scene A and documented it through gridded searches, measurements, photography and laser scanning. Edward S. Knapp described recovered device components, including a power source, receiver, electronic speed controller, container, fragmentation and carrying bag. Elena Graff testified that fingerprints on cardboard and paper from the bombing scenes could establish contact, but not when it occurred.
About
Recovered evidence supported reconstruction and forensic examination of the first bomb. Prosecutors also proffered that foreign nationals were present at Scene A in response to a disputed jurisdictional exemption argument concerning a bombing-a-place-of-public-use count.