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The Austin Police Department has been overwhelmed with more than 1,200 calls about possible bombs and suspicious packages since a series of bombings has terrorized Texas’ capital city since early March. Within 24 hours, beginning at 8 a.m. Monday morning through 8 a.m. Tuesday morning, the Austin PD received 420 phone calls, according to the AP.

The frenzy of activity comes after a fifth bomb exploded shortly after midnight at a FedEx distribution facility in Schertz, Texas, injuring one worker. It had been shipped from and sent to Austin, Texas Attorney General Ken Paxton told KXAN-TV, according to the AP. It is further evidence the explosives were connected to the deadly serial bomber who has detonated four other packages in the state capital.