A package bound for Austin, Texas blew up early Tuesday at a FedEx facility in Schertz, Texas, northeast of San Antonio, authorities said. One female employee is said to have suffered a non-life-threatening injury.
The FBI tells CBS News multiple FBI agents and local law enforcement are on the scene.
The agency couldn't confirm reports that the package may have contained nails and shrapnel.
The FBI says it's "more than possible" the blast is linked to the.
The blast comes as authorities search for answers to a series of explosions that have rattled Austin.
Police and federal agents said that the blast Sunday night triggered along a street by a nearly invisible tripwire suggests a "higher level of sophistication" than they have seen before in three early package bombs left on doorsteps, and means the carnage is now random, rather than targeted at someone in particular.
Two people are dead and four injured, and authorities don't appear closer to making any arrests in the four bombings that have rocked the capital city.
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