A package exploded at a FedEx distribution center northeast of San Antonio shortly after midnight Tuesday. NBC's Pete Williams is reporting investigators have a "pretty good indication" that the package was bound for Austin, where four other package bombings have occurred in the past three weeks.
The Federal Bureau of Investigation and The Bureau of Alcohol, Tobacco, Firearms and Explosives is on scene at the facility in Schertz, Texas. ATF says no one was seriously injured, KXAN reports.
Schertz police say the package was in the sorting area of the facility. The explosion happened around 12:30 a.m. and about 75 employees were there at the time. Officials said the medium-sized package had metal and nails inside it.
Federal agents say this package may be linked to attacks by what they believe is a serial bomber in Austin. Schertz is about 75 miles southwest of Austin.
A series of bombings in Austin have killed two people and injured four.