Austin, Texas, which has been rocked by a series of bomb explosions in recent weeks, is still under heavy threat with two bombs found at different FedEx facilities in Texas.

Overnight, there was an explosion at a FedEx facility just outside of San Antonio. A package that was to be sent to Austin transferred from one conveyor belt to another, setting it off. The package’s origin was also Austin, Texas. Via CBS:

The San Antonio Texas Fire Department said a package bomb apparently bound for Austin exploded at a FedEx distribution center in Schertz, Texas, hurting one person, a FedEx employee who apparently suffered a non-life-threatening “percussion-type” injury from the blast. An FBI agent told CBS News “it’s more than possible” the package is related to explosions that have occurred in Austin in recent days.

The package exploded shortly after midnight on Tuesday.

Meanwhile, a possible sixth package has also been found at a FedEx facility, this one in the Austin airport. This from the AP:

Austin police have deployed a hazardous materials squad to a FedEx shipping facility near the city’s airport to investigate reports of a suspicious package.

It isn’t known yet if the suspicious package is linked to a bomb that detonated earlier Tuesday at a FedEx distribution center near San Antonio or the four bombs that have gone off in Austin this month.

But the Austin Police Department says an investigation is underway.

There is no confirmation at this time whether or not the package at the city airport is actually a bomb, but local authorities are taking no chances in the wake of the previous attacks in the city.

There’s also no confirmation at this time of any suspects in the bombings or any motivations whatsoever.