Take a look at the explosive device fragments and other crime scene images from the deadly Boston Marathon bombings.
A lid to a pressure cooker thought to have been used as the explosive device in the Boston bombings has been found on a roof of a building near the scene.
iStock / MartiSaiz
iStock / damircudic
Sign up to get Breaking News, Daily Headlines, Severe Weather Alerts & more delivered straight to your e-mail inbox