The fear in east Texas vanished with the indictment on Wednesday of a man suspected of putting more than 30 explosive devices in mailboxes and other locations, the Associated Press reported.
AP reported that suspect Larry Eugene North was angry at the government and appeared have acted alone.
ATF Agent Robert R. Champion told AP that investigators believe North is the culprit who planted 36 devices since Feb. 5. The explosives put residents of east Texas on edge.
The AP reported that North had been under surveillance for about week before being arrested while placing a bomb in a mailbox in Tyler, Tex.