A day after a deadly bombing at the Boston Marathon, . people are in mourning across the country.
Flags are flying at half-staff across the state and nation. All federal buildings have their flags at half-staff at the order of President Obama. State and local entities also have flags at half-staff.
Meanwhile, the FBI is confirming that pressure cookers may have been used in the Boston Marathon bombings that killed at least three and wounded more than 170.
FBI special agent in charge Richard DesLauriers says pieces of black nylon and fragments of ball bearings and nails were found and authorities believe the bombs were placed in a dark-colored backpack or bag.
A source close to the investigation had said earlier that the bombs were made in 1.6-gallon pressure cookers, one containing shards of metal and ball bearings, the other packed with nails, and both stuffed into duffel bags.
A second person briefed on the investigation confirmed that at least one of the explosives was made of a pressure cooker. Both spoke on condition of anonymity because the investigation is ongoing.
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