AUSTIN, Texas (AP) — After a 16-hour workday investigating the Austin bombings, police Lt. Courtney Renfro arrived home to find Amazon packages on his doorstep.

Renfro paused, even though he had ordered the packages himself.

Members of the Austin police bomb squad investigated a series of explosions that killed two people over several weeks. They also dealt with the grueling toll of chasing thousands of reports of suspicious packages, and trying to locate a suspected bomber who turned out to have no criminal history.

Renfro told the Austin American-Statesman that the series of attacks left him "in utter shock that this was happening in our city."

As the bombings were occurring, bomb technicians responded to more calls during one key week than they had the entire year before.

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Information from: Austin American-Statesman, http://www.statesman.com