(Urbandale, Iowa) Employees at the Marsh building on Meredith Drive in Urbandale noticed a powdery substance leaking from an envelope this morning.
Urbandale Police Officer Andrew Dobbins tells WHO Radio News, a room was isolated, and up to 20-employees were kept on scene. The office building was placed on a voluntary evacuation.
Hazardous materials experts and the U.S. Postal Service investigated and found the powder did not pose any threat, and the building was given the all-clear.