White powder found in a letter received Monday by a Dallas business turned out to be foot powder.
Allied Marketing reported the letter and Dallas Fire-Rescue was called to the scene on the 1500-block of Regal Row to investigate.
After testing the material, they determined the substance was foot powder.
It is not yet known if the business had been targeted before, or what message, if any, accompanied the letter.
An investigation into who sent the letter is under way.
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.