PFLUGERVILLE, TEXAS--Cops cordoned off a quiet neighborhood in this city northeast of Austin, Wednesday morning. It's where 23-year-old Mark Anthony Conditt lived. The young man had no criminal background.
An aunt who lives in Colorado says she's stunned that her nephew was involved in the bombings.
"He was at my Christmas table," Mary Conditt told NewsFix sister station, KDVR. "He was a great kid. He was smart. He was loving. He was kind. I have no idea who this person is."
His mom posted about him on Facebook in 2003, proud that her son had finished high school and already had college credit.
He kept a blog for a while in 2012, apparently as part of a government class in the Austin Community College district. He wrote about his opposition to gay marriage and free abortion and to the release of an Al-Qaeda terrorist.
In his profile page, he described himself as conservative, but "not that politically inclined."
Our next look at him comes three days ago. cops say he's the guy caught on security camera dropping off boxes at a FedEx store in Austin.
Most of his Facebook page had been taken down by early Wednesday morning so we don't know what was there. We do know investigators used his computer history to figure out what he'd been up to in the past few days. What they haven't figured out was how he spent his last 24 hours.
Now it's up to anyone who knew Mark Conditt to help cops and all of us understand what turned a promising young man into a killer.