Emergency crews cleared the scene after a suspicious envelope was reported at the Army and Air Force Exchange Building in Dallas.
The suspicious device was at the AAFES’s Stoneridge Call Center on Autobahn Drive south of Interstate 20 near Hampton Road. The scene is only a few blocks away from their headquarters on Walton Walker Boulevard.
DFR public information officer Jason Evans said a call came in at 9:48 a.m. about the envelope, prompting investigators to head to the building.
Earlier information reported the incident as a suspicious package. Dallas Fire-Rescue clarified that the package was actually an envelope classified as a "nuclear, biological, or chemical threat" or "NBC threat."
Investigators say the envelope contained a few small batteries. Emergency crews did not find explosives in the envelope.
Previous envelopes classified as "NBC threats" have been investigated as white powder letters.
Letters containing powder invoke fear after five people were killed and more than a dozen were injured when letters laced with anthrax spores were mailed to offices in the days and weeks after Sept. 11, 2001.
Since then, hundreds of hoax letters have been received nationwide at schools, banks and other businesses. Though they've been harmless, anyone receiving a white powder letter is advised to evacuate the area and call 911.
The Army and Air Force Exchange is a joint military activity that provides goods and services to current and previous service members, according to the organization's website.