The FBI also joins the investigation on Tuesday after letters with a white powdery substance forced evacuations at 2 Texas elementary schools.
An employee in the front office at Ethridge Elementary School, in Garland, gets an envelope including white powder. School district spokesman said that the powder was examined at the scene & it was not dangerous.
Students were taken to nearby high school as a safety measure. Parents were notified via the telephone alert system that they could pick up their children.