Police recover fabric from bag thought to have held Boston bomb

Police investigating the deadly blasts at the Boston Marathon said today that they had recovered fragments of black nylon that may have been from a bag used to conceal one or both of the bombs detonated at the race, the FBI official leading the probe said.

Police investigating the deadly blasts at the Boston Marathon said on Tuesday that they had recovered fragments of black nylon that may have been from a bag used to conceal one or both of the bombs detonated at the race, the FBI official leading the probe said.

HT Image

FBI special agent in charge Richard DesLauriers said investigators also had recovered fragments of ball bearings and nails from the scene of Monday's back-to-back explosions, which killed three people and wounded more than 170 others.

The devices may have been constructed from pressure cookers, he said.

Separately, President Barack Obama will come to Boston on Thursday to attend a memorial service for the blast victims, Massachusetts Governor Deval Patrick said.