A device exploded early Tuesday at a FedEx ground distribution facility in Texas injuring one person, which may be linked to a string of bombings that have rocked the state’s capital this month, officials said.

Schertz Police Lt. Manny Casas told Fox San Antonio a medium-sized box was on the conveyor belt when the explosion occurred shortly after midnight. Casas said a woman was treated for a “possible sound injury” and was released.

FedEx said in a statement to Fox News that one employee is being treated for “minor injuries” after the single package exploded at the facility. Schertz is located 22 miles east of San Antonio and 73 miles south of Austin.

A police officer stops a vehicle at a check point in front of a FedEx distribution center where a package exploded, Tuesday, March 20, 2018, in Schertz, Texas. Authorities believe the package bomb is linked to the recent string of Austin bombings. (AP Photo/Eric Gay)

A police officer stops a vehicle at a check point in front of a FedEx distribution center where a package exploded, Tuesday, March 20, 2018, in Schertz, Texas.  (AP Photo/Eric Gay)

“We are working closely with law enforcement in their investigation,” the statement said. “We are not providing any additional specific information about this package at this time.”

Schertz police couldn’t immediately confirm what was in the package, but law enforcement officials told KSAT the medium-sized package contained metal shrapnel and nails and was headed to Austin when it exploded on a conveyor track.

The blast drew a large response from state, local and federal law enforcement agencies. Federal agents told the Associated Press the package is likely linked to attacks in Austin, while an ATF spokesperson told Fox News that officials are processing evidence at the scene and its “too early” to say if this fifth blast is related.

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Officials at the scene after a blast was reported at a FedEx ground distribution facility in Schertz, Texas.  (KABB-TV)

An ATF official told Fox News officials are looking at the latest blast due to the proximity to Austin and the other blasts. law enforcement agents are carefully combing the scene at the 100,000 square foot facility, the official added.