Austin-American Statesman/Nick Wagner via Associated Press
FBI agents work at the scene of an explosion in Austin, Texas, Sunday, March 18, 2018.
One person has been injured after a package bound for Austin exploded at a FedEx facility in Schertz, Texas.
The package, which contained nails and shrapnel, exploded shortly after midnight local time, Reuters reported, citing the San Antonio fire department. Schertz is located outside San Antonio, 65 miles south of Austin.
The incident comes after four explosions in Austin, where two people have been killed and several others injured when package bombs were detonated in various parts of the city. Police suspect that a "serial bomber" is on the loose.
More follows.