The investigation into this week's bomb attacks at the Boston Marathon is “wide open,” according to FBI lead investigator Richard DesLauriers.
“Someone knows who did this,” DesLauriers said on Tuesday. “Importantly, the person who did this is someone’s friend, neighbor, coworker or relative. We are asking anyone who may have heard someone speak about the marathon, or the date of April 15, in any way that indicated that he or she may have targeted this event to call us.”
Attorney General Eric Holder said that any details could help to investigators.
DesLauriers said the current “range of suspects and motives remains wide open.”
The first details about the bombs were released Tuesday. They were explosives packed inside pressure cookers, surrounded by tiny nails and ball bearings that became shrapnel when they exploded. The bombs, placed 300 feet apart, were hidden inside duffel bags or backpacks – pieces of black nylon, presumably from the bags, were found at the scene.
One of the pressure cookers was a “homemade claymore,” a directional explosive with a triggering mechanism using a circuit board and battery pack. Both were recovered at the crime site.
“They functioned as designed,” an official with strong knowledge of explosives said. “It appeared to be built from scratch but with a sophisticated triggering mechanism. And frankly, at the end of the day, all bombs are crude devices, and it is the way they are triggered that can be sophisticated.”
Homeland Security Secretary Janet Napolitano said there was “no current indication to suggest that the events in Boston are indicative of a broader plot."
Many fake charity websites were registered hours after the explosions in attempts to swindle donations to victims of the attacks. Massachusetts Gov. Deval Patrick and Boston Mayor Thomas Menino announced a centralized fund for the victims called The One Boston Fund, which can be donated to via the website onefundboston.org.