Affidavit: Video, confidential informant led authorities to Austin bomber

John C Moritz | Corpus Christi (Texas) Caller Times

Show Caption Hide Caption What we know: Austin bomber's final moments Authorities say the suspected bomber responsible for two deaths and several injuries in Texas has died from a self-inflicted explosion.

AUSTIN — Authorities were able to identify the man whose deadly bombings terrorized Austin for three weeks before he died in a blast he set off after a confidential police source identified the bomber through images taken by security video, documents released Monday show.

Agents from several federal law enforcement agencies and the Austin police chief said at a news conference Monday that authorities are still collecting evidence from the randomly set blasts that left two dead and injured several others.

According to the information released, security video from the FedEx store in Austin where packages containing explosives were mailed showed images of Mark Conditt, 23, and his red pickup.

Video from an Austin-area Home Depot where "Drive Like Your Kids Live Here" signs similar to ones found at the site of an explosion that injured two men also showed an image of Conditt making the purchase.

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A confidential police informant who authorities say had several contacts with Conditt said the Home Depot images were at least "98%" likely to be Conditt.

U.S. Magistrate Mark Lane in Austin unsealed much of the complaint affidavit against Conditt, but said that some of the information that led authorities to the bomber must still be held secret to protect the investigation.

The documents also said the bombs were made from plastic and metal pipes and shrapnel.

Authorities do not believe anyone else took part in the bombings. They declined to release the audio recording they said Conditt made before he took his own life.

"We are concerned that it could inspire other people to commit other acts," said Christopher Combs of the FBI's office in San Antonio.

Authorities are still seeking to learn the motive behind the bombings.

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“The investigation continues as authorities are still reviewing evidence collected in this case, namely computer-related information,” according to a news release issued by local and federal officials. The release also noted that the federal charge against Conditt was dismissed. The charge had been issued before Conditt took his life March 21.

Beginning March 2, police say Conditt planted bombs in different parts of Austin. He began by placing explosives in packages left overnight on doorsteps, killing 39-year-old father Anthony Stephan House and musician Draylen Mason, 17, and critically injuring Esperanza Herrera, 75. He then rigged an explosive to a tripwire along a public trail, injuring two young men who crossed it. Finally, he sent two parcels with bombs via FedEx, one of which exploded and injured a worker at a distribution center near San Antonio.

Contributing: The Associated Press. Follow John C Moritz on Twitter: @JohnnieMo

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