How Police Caught The Austin Bomber

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ROUND ROCK, TX - MARCH 21: Law enforcement officials search for evidence at the location where the suspected package bomber was killed in suburban Austin on March 21, 2018 in Round Rock, Texas. Mark Anthony Conditt, the 24-year-old suspect, blew himself up inside his vehicle as police approached to take him into custody. A massive search had been underway by local and federal law enforcement officials in Austin and the surrounding area after several package bombs had detonated in recent weeks, killing two people and injuring several others. (Photo by Scott Olson/Getty Images)

Police have identified the Austin bombing suspect as Mark Anthony Conditt.  No other details have been released.  CNN spoke to Tony Plohetski, an investigative reporter for the Austin American-Statesman who says local police and federal agents used a lot of old-fashioned shoe leather to find a suspect:

They were looking for someone who bought bomb-making materials.  It worked.  Police said sales receipts became critical evidence.

But, the big break came when Conditt shipped a device from a FedEx store which was recorded on surveillance cameras.

NBC News has talked to Conditt’s neighbors in Pflugerville, Texas, a suburb of Austin.

Police are still searching for a motive in the bombings.