Officials are reporting that the Boston bombs were placed in a pressure cooker, a tactic used by the terrorist group. That doesn’t prove a link, but it raises important questions, says Eli Lake
A key
component of the bombs used yesterday in the attacks on the Boston
Marathon resemble the kind of homemade bomb al Qaeda has encouraged
English-speaking terrorists to use.
The
Daily Beast has confirmed with U.S. counter-terrorism officials that
the bombs placed Monday at the marathon were made from pressure cookers,
a crude kind of explosive favored by insurgents in Pakistan and
Afghanistan. A recipe for a bomb that uses the pressure cooker was part
of the debut issue of Inspire, the English-language online magazine of al Qaeda in the Arabian Peninsula.
While
the pressure cooker component is far from definitive proof that
Monday’s attack was committed associates of al Qaeda, experts inside and
outside of the government say it is nonetheless an important lead for
investigators.
“The
fact that the pressure cooker was used is a curious and suspicious
detail which I have no doubt this will lead investigators to look at
whether this was inspired, or motivated by an al Qaeda affiliate,” said
Evan Kohlmann, senior partner at Flashpoint Global Partners, a New York
based security firm. An article in the summer, 2010 issue of Inspire
magazine called “Make a Bomb in the Kitchen of Your Mom,” describes the
pressurized cooker as the most effective method for bomb-making. “Glue
the shrapnel to the inside of the pressurized cooker then fill in the
cooker with the inflammable material,” the article instructs.
The how-to was reprinted in Lone Mujahid Pocketbook, a compendium of tips for the do-it-yourself jihadist placed online this year by al Qaeda in the Arabian Peninsula.
While pressure cooker bombs have become common in Pakistan and Afghanistan,
they are still rare for the United States. In July 2011, Naser Abdo, a
U.S. army private first class was arrested near Ft. Hood on explosives
charges. A copy of the Inspire article on bomb making was found in his home.
“Glue the shrapnel to the inside of the pressurized cooker then fill in the cooker with the inflammable material,” the article instructs.
Experts
cautioned that it will take more analysis of the bomb to determine
whether the pressure cooker bomb matches al Qaeda’s recipe. The people
who will be performing that analysis reside at the FBI’s Terrorist
Explosive Device Analytical Center, the government’s most comprehensive
database on bomb design.
“In some cases where you have a sophisticated bomb maker who is responsible for a number of bombs, there will be an equivalent of a signature effect,” said Brian Michael Jenkins, a senior adviser to the president of the RAND Corporation and an authority on counter-terrorism. “They cut wires in certain ways, there are idiosyncrasies in how these bombs are designed.”
“In some cases where you have a sophisticated bomb maker who is responsible for a number of bombs, there will be an equivalent of a signature effect,” said Brian Michael Jenkins, a senior adviser to the president of the RAND Corporation and an authority on counter-terrorism. “They cut wires in certain ways, there are idiosyncrasies in how these bombs are designed.”
But
Jenkins also said in recent cases most of the bombers are amateurs,
attempting an attack for their first time. “We have seen mainly in
recent years are essentially one offs,” he said. “A single device made
by one individual does not leave a signature.”
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long.Eli Lake is the senior national-security correspondent for Newsweek and the Daily Beast. He previously covered national security and intelligence for the Washington Times. Lake has also been a contributing editor at The New Republic since 2008 and covered diplomacy, intelligence, and the military for the late New York Sun. He has lived in Cairo and traveled to war zones in Sudan, Iraq, and Gaza. He is one of the few journalists to report from all three members of President Bush’s axis of evil: Iraq, Iran, and North Korea.
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