The bombings began March 2 when a package exploded on the front porch of the home of Anthony Stephan House, 39, killing him. The second attack happened March 12 when a bomb in a package was taken into the home of Draylen Mason, 17. The package exploded, killing Mason, and injuring his mother.
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The third bomb exploded when a 75-year-old Hispanic woman picked up a package on her front porch. She was seriously injured.
On Sunday, two men were hurt when a bomb went off apparently after one of the two hit a tripwire attached to the explosive device.
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Authorities are operating under the assumption that the bombs were made by the same person.
Here is what we know about the Austin bomber’s habits:
- Prior to the explosion Sunday, the three bombs were left in packages at homes.
- Sunday's bomb was tripwire-activated.
- Sunday's bomb was in a different geographical area than the other three bombs.
- The victims of the first three bombings were African-American and Hispanic. Sunday night's victims were white.
- Fred Burton, a security and terrorism analyst at Austin-based Stratfor, told the Austin American-Statesman that he believes it is the same person doing the bombing. He may have changed bombing locations and methods to throw investigators off, Burton said.
- Common household items were used to construct the first three bombs, the American-Statesman reported.
Credit: Eric Gay
Credit: Eric Gay
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