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US What the bombs that went off in Austin might tell us about the bombmaker

10:16  14 march  2018
10:16  14 march  2018 Source:   cnn.com

Austin package bomb victim's neighbor describes trying to save him

  Austin package bomb victim's neighbor describes trying to save him <p>Police in Austin, Texas are warning the public Tuesday morning to watch out for an apparent bomber on the loose. Investigators now say three package bombs, including two that exploded Monday, are connected.</p>The explosions happened within about 15 miles of each other. Seventeen-year-old Draylen Mason died and another woman was hurt in an explosion Monday morning. A second blast about five hours later injured another woman.

An image tweeted by the Austin police department shows members of the FBI. © Austin Police Department An image tweeted by the Austin police department shows members of the FBI.

Details about the deadly bombings in Austin remain scarce, but one thing is clear, experts say: whoever made the bomb knew what they were doing.

Three parcel bombs exploded at homes in the Texas capital over 10 days, killing two people, wounding two others and leaving a community shaken.

As state and federal agencies work together to find answers, here's what experts say the explosions tell us about the culprit or culprits.

These are not their first bombs

Making a bomb that works at the right time is harder than it might sound.

Teen killed by bomb in Austin remembered as ‘very intelligent'

  Teen killed by bomb in Austin remembered as ‘very intelligent' A 17-year-old musician described as “insightful and mature” was killed by a package bomb that exploded at his Austin home on Monday. Draylen Mason died 10 days after Anthony Stephan House was killed in another local bombing that police believe is connected to Monday’s attack.Mason was a bassist and member of at least three musical groups, including Interlochen Center for the Arts, the Austin Youth Orchestra and Austin Soundwaves, according to his Facebook page.The East Austin College Prep student was remembered as an academic standout with a promising future in an outpouring of online condolences Tuesday.

All of the explosives in Austin detonated while a victim was carrying them, and not while the suspect or suspects was placing them on the victims' doorsteps.

"That shows that the person who's doing this, they know what they are doing and they've probably practiced a lot," Ben West, a security analyst with the geopolitical intelligence platform Statfor, told CNN affiliate KXAN.

It often takes several attempts for parcel bombers to "hit their stride," and they "are rarely this effective" on the first try, a report released by Statfor said.

These are the victims of the Austin package bombings

The bombmaker could be from Austin

Or the suspect is working with someone who does live in the Austin area.

The packages were not delivered by the US Postal Service or any other mail delivery service, so someone hand-delivered them, likely overnight, to the three Austin homes, the Stratfor report says.

These are the victims of the Austin package bombs

  These are the victims of the Austin package bombs <p>Two lives were cut short when explosive packages arrived on their doorsteps in Austin, Texas.</p>Anthony Stephan House was a senior project manager at Texas Quarries, a supplier of limestone from the state, according to his LinkedIn page.

Authorities are likely looking at surveillance video from neighbors' yards that may have captured any vehicles or people going to and from the area, said Ryan J. Morris, founder of Tripwire Operations Group, a company that provides explosives training to law enforcement.

What we know about the Austin explosions

Suspect is a skilled bombmaker

Not many details about the construction of the bombs have been made public, but Austin Police Chief Brian Manley said "these are very powerful devices."

"So there's a certain level of skill and sophistication that whoever is doing this has, and ... we are hoping to use the evidence we have to track them down based on what we are seeing on all three scenes that seem to be consistent," Manley told KXAN on Tuesday.

The way the bombs were detonated could indicate how skilled the maker is.

"The detonation of the device when it was moved could indicate the use of a remote detonator," the Stratfor report said, or the use of a triggering device such as a mercury switch -- which is activated by movement.

If the bomb maker used a remote, it would have "required the bomber to have had visual contact with his victim -- potentially exposing him to detection," the Startfor report said.

How police identified the suspect in the Texas serial bombings .
A search of store receipts helped police find the man they believe is responsible for almost three weeks of fear in Texas' capital city.As police in Austin, Texas, desperately searched for the person who had left explosive packages all over the city, killing two people, they realized that the bombs had something in common: they were being made from common household ingredients. So investigators hit the area's stores, scanning receipts and looking for clues.

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