Boston Bombs Made With Explosives In Pressure Cookers

The warped metal casing testifies to the power of the deadly blast which
brought terror to the jubilant spectators at the race's finish line. On the strength of debris found at the scene, investigators said they believe
pressure cookers were used to amplify the explosion.




And the pictures appear to show one of the stainless steel cookers, complete
with a lab number and the phrase