Update to this story.
A package bound for Austin, Texas, exploded at a FedEx facility in a nearby city early Tuesday.
The package, which contained nails and shrapnel, exploded at the Schertz, Texas, facility shortly after midnight local time. It was traveling along an automatic conveyor when it exploded, authorities said.
One person was treated by medical teams and released at the scene, The Washington Post reported.
Another device in a package was discovered at the same FedEx location that didn’t explode, according to the Post. That undetonated package could provide investigators crucial clues in tracking down the culprit.