Al Qaeda Link ProbedLaw enforcement and intelligence authorities investigating the Boston terror bombings suspect al Qaeda terrorists were behind the blasts that killed three and injured scores although so far there is no firm evidence.
So far there has been no claim of responsibility, something that in the past was a characteristic of al Qaeda’s attack methodology. Senior jihadists monitored by Western intelligence agencies on the Internet remained silent in the hours after the bombings, officials said.
However, initial reports indicate the bombs were fashioned from pressure cookers and designed to avoid detection by bomb-sniffing dogs. Investigators believe the devices were delivered in duffle bags and are now searching surveillance video of Boston for clues. An al Qaeda magazine in 2010 directed terrorists to use kitchen materials to make bombs, including pressure cooking bombs, for killing “tens” of people.
The bombs contained metal pieces designed to increase their lethality.
A review of recent jihadist web postings show that several al Qaeda affiliated terrorists stated attacks on U.S. soil were coming.
For example, an al Qaeda weapons specialist, Abdallah Dhu-al-Bajadin, wrote in an online jihadist website last month that al Qaeda remains capable of conducting spectacular attacks against the United States. He dismissed U.S. intelligence assertions that al Qaeda is in decline.
“If your reports say the organization is a danger, we strike you on your own turf and show ourselves to be more dangerous than you expect, with operations that dazzle your security experts,” Dhu-al-Bajadin stated, according to a translation of the report.
Another online report from April 1 quoted an Ahmad Bin Laden who posted a YouTube video urging the White House to withdraw all U.S. troops from Saudi Arabia by May 31. The jihadist announced plans for “a thunderous war against all the vital sectors in America.”
“You are forcing us to escalate and destroy your country and its people,” the video stated.
Also, some analysts speculated the recent video message from al Qaeda leader Ayman al Zawahiri contained subtle clues that an attack was coming.
Al Qaeda’s first issue of Inspire magazine published in July 2010 contained an article on how to construct a bomb in a kitchen that will be undetectable to sniffer dogs.
The article, headlined “Make a bomb in the kitchen of your mom,” urges jihadists in the United States and Europe to “work inside the West such as the operations of Nidal Hassan and Faisal Shazad”—the Islamist attacker in the U.S. military who conducted the Fort Hood shooting and the failed Times Square bomber, respectively.
“My Muslim brother: We are conveying to you our military training right into your kitchen to relieve you of the difficulty of traveling to us,” the article states, adding that “all that you have to do is enter your kitchen and make an explosive device that would damage the enemy.”
The article notes ingredients for kitchen-made bombs are readily available and do not raise suspicion and can be easily disposed if authorities conduct a search.
The Inspire article says gunpowder placed in a pressure cooker can be used as a bomb.
“The pressurized cooker is the most effective method,” the article said. “Glue shrapnel to the inside of the pressurized cooker then fill the cooker with inflammable material.” A small light bulb can be used as a detonator, it said.
“Place the device in a crowded area,” the article said. “Camouflage the device with something that would not hinder the shrapnel such as cardboard.”
“You need to also include shrapnel,” the article said. “The best shrapnel are the spherical shaped ones.”
Also, “sniffing dogs are not trained to recognize them as bomb making ingredients,” the article says.
“In one or two days the bomb could be ready to kill at least 10 people,” the article said. “In a month you may make a bigger and more lethal bomb that could kill tens of people.”
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