Mt. Vernon Register-News

Community News Network

April 16, 2013

Forensic investigators discover clues to the Boston bombing

WASHINGTON — The forensic investigation of the Boston Marathon bombing is developing a preliminary picture of how it was done, though not yet who may have done it.

Almost immediately, the two billowing clouds of white smoke visible in videos were a tipoff to bomb specialists about the type of explosives used. Within 24 hours, enough bomb fragments were retrieved by investigators to suggest the use of improvised explosive devices — at least one a metal pressure cooker packed with explosives — that were left on the ground near the race finish line.

Investigators are casting a wide net, examining the possibility of a foreign or domestic inspired attack, said Timothy Murphy, an FBI agent for 23 years who served as deputy director of the bureau for a year and a half ending in 2011, when he left to work in the private sector.

"They'll look at the timing — the events that occurred in the past, who is most likely to commit something like this," Murphy said. "They'll come up with theories. They'll look at international terrorism, including state sponsored. Who else would potentially be involved here?"

The white smoke indicated that the bomber used so-called smokeless or black-powder explosives rather than a military- style high-explosive such as C-4, which produces a distinctive black smoke, according to Fred Burton, former deputy chief of counterterrorism for the State Department's Diplomatic Security Service who investigated the first World Trade Center bombing.

"The real way to know what explosive was used is to analyze the post-blast debris for traces of explosive," Michael Sigman, assistant director for physical evidence at the National Center for Forensic Science at the University of Central Florida in Orlando, said in a phone interview. "There will be traces there."

Investigators can identify the chemical composition of the explosives quickly, even before residue samples are sent to the FBI's laboratory in Quantico, Va., he said. The analysis may provide some indications about its source, though that may be limited, particularly if it's a commercial material, he said.

Text Only
Community News Network
  • sleepchart.jpg America’s sleep-deprived cities

    Americans might run on sleep, but those living in the country's largest cities don't appear to run on much.

    August 20, 2014 1 Photo

  • Africa goes medieval in its fight against Ebola

    As the Ebola epidemic claims new victims at an ever-increasing rate, African governments in Sierra Leone, Guinea and Liberia have instituted a "cordon sanitaire," deploying troops to forcibly isolate the inhabitants in an area containing most of the cases.

    August 18, 2014

  • Democrat? Republican? There's an app for that

    If you're a Republican, you might want to think twice before buying Lipton Iced Tea, and forget about Starbucks coffee. If you're a Democrat, put down that Reese's Peanut Butter Cup, and throw away the cylinder of Quaker Oats in your pantry.

    August 18, 2014

  • Five myths about presidential vacations

    In the nuclear age, presidents may have only minutes to make a decision that could affect the entire world. They don't so much leave the White House as they take a miniature version of it with them wherever they go.

    August 15, 2014

  • weightloss.jpg The scales of injustice: Weight loss differs between men, women

    You're not imagining it: There really are differences between the way men and women diet, lose weight and respond to exercise.

    August 13, 2014 1 Photo

  • Drug dealers going corporate

    A top federal official on Tuesday said that 105 banks and credit unions are doing business with legal marijuana sellers, suggesting that federal rules giving financial institutions the go-ahead to provide services to dealers are starting to work.

    August 13, 2014

  • wwimemorial.jpg The benefit of World War I omission on the Washington Mall

    By 1982, when the Vietnam Veterans Memorial opened on the National Mall, something had shifted in the way we remember our wars. A national memorial, prominently placed on the nation's most symbolically significant public space, came to seem like an essential dignity offered to veterans, their families and the memory of those who gave their lives. But there is an exception.

    August 11, 2014 1 Photo

  • In Japan, ramen aficionados worry their favorite dish is coming off the boil

    "The ramen boom has ended," said Ivan Orkin, a New Yorker who first traveled to Japan in the 1980s and now owns two noodle-soup restaurants in Tokyo. "A boom implies that there are new avenues and new growth to pursue, and that's not the case in Japan anymore."

    August 11, 2014

  • Ronnie Ellis: U.S. Senate race trail long and interesting

    By Ronnie Ellis/CNHI News Service

    FRANKFORT — Last week was a long one, endured under the onslaught of an awful summer cold and played out across the commonwealth. It began in Fancy Farm and ended it in Corbin with a trip to Hazard in between.

    August 9, 2014

  • Senate race becomes family affair

    By LANA BELLAMY
    CNHI NEWS SERVICE
    PAINTSVILLE — U.S. Senate Minority Leader Mitch McConnell got personal on Friday while calling a report inaccurate concerning his wife’s role as a board member in an organization that funds anti-coal efforts.

    August 9, 2014

Twitter Updates
Facebook
Stocks