BOSTON The investigation of the Boston Marathon bombing is focusing on a suspect believed to have carried heavy bags , but entered a third day today without any arrests or word on who was responsible.
Investigators appeared to have gathered enough evidence at the crime scene on Tuesday to slightly narrow their search, but it was also not known whether the perpetrators were domestic or foreign, U.S. officials said.Ind.
The twin bombs in Boston, which killed three people and injured 176 others, was the worst attack in the United States since security was stepped up across the country after the September 11, 2001 hijacked plane strikes.
A stretch of Boston's Street almost a mile long and blocks around it remained closed on Wednesday as investigators searched for clues. The explosions sprayed shrapnel far enough that police were collecting fragments from rooftops along the marathon's course.
Hundreds of people on Tuesday night turned out at Boston Common, where runners a day earlier had boarded buses to the take them to the race's start line, singing songs including "God Bless America."
Boston Medical Center may be sending home some of the seriously injured people.
Among the items recovered at the bomb scene were pieces of black nylon that could be from a backpack, fragments of ball bearings and nails, and possibly the remains of a pressure cooker device, Richard DesLauriers, the Federal Bureau of Investigation's special agent in charge in Boston, told a news conference on Tuesday. Evidence collected at the scene was being reconstructed at the FBI laboratory in Quantico, Virginia, DesLauriers said.
Bomb scene pictures produced by the Boston Joint Terrorism Task Force and released on Tuesday show the remains of an explosive device including twisted pieces of a metal container, wires, a battery and what appears to be a small circuit board.
"That gives you an idea of the scope, of the power of the blast, and you can see why it was so devastating," said Gene Marquez, acting special agent in charge of the ATF Bureau in Boston.
One picture shows a few inches of charred wire attached to a small box, and another depicts a half-inch nail and a zipper head stained with blood. Another shows a Tenergy-brand battery attached to black and red wires through a broken plastic cap. Several photos show a twisted metal lid with bolts.
Pressure cooker-style bombs are common in South Asia, accounting for roughly half of the explosive devices defused in the country’s volatile northwest, a top Pakistani bomb disposal squad official says.
BOSTON The investigation of the Boston Marathon bombing is focusing on a suspect believed to have carried heavy bags , but entered a third day today without any arrests or word on who was responsible.
Investigators appeared to have gathered enough evidence at the crime scene on Tuesday to slightly narrow their search, but it was also not known whether the perpetrators were domestic or foreign, U.S. officials said.Ind.
The twin bombs in Boston, which killed three people and injured 176 others, was the worst attack in the United States since security was stepped up across the country after the September 11, 2001 hijacked plane strikes.
A stretch of Boston's Street almost a mile long and blocks around it remained closed on Wednesday as investigators searched for clues. The explosions sprayed shrapnel far enough that police were collecting fragments from rooftops along the marathon's course.
Hundreds of people on Tuesday night turned out at Boston Common, where runners a day earlier had boarded buses to the take them to the race's start line, singing songs including "God Bless America."
Boston Medical Center may be sending home some of the seriously injured people.
Among the items recovered at the bomb scene were pieces of black nylon that could be from a backpack, fragments of ball bearings and nails, and possibly the remains of a pressure cooker device, Richard DesLauriers, the Federal Bureau of Investigation's special agent in charge in Boston, told a news conference on Tuesday. Evidence collected at the scene was being reconstructed at the FBI laboratory in Quantico, Virginia, DesLauriers said.
Bomb scene pictures produced by the Boston Joint Terrorism Task Force and released on Tuesday show the remains of an explosive device including twisted pieces of a metal container, wires, a battery and what appears to be a small circuit board.
"That gives you an idea of the scope, of the power of the blast, and you can see why it was so devastating," said Gene Marquez, acting special agent in charge of the ATF Bureau in Boston.
One picture shows a few inches of charred wire attached to a small box, and another depicts a half-inch nail and a zipper head stained with blood. Another shows a Tenergy-brand battery attached to black and red wires through a broken plastic cap. Several photos show a twisted metal lid with bolts.
Pressure cooker-style bombs are common in South Asia, accounting for roughly half of the explosive devices defused in the country’s volatile northwest, a top Pakistani bomb disposal squad official says.
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