KNOXVILLE, Tenn (WVLT) -- Officials have given the"all clear" after a letter containing a suspicious powder was received in the mailroom at the IRS office in the John Duncan Federal Office Building in Knoxville.
Knoxville Police and Fire Department Hazardous Materials Team members were called to the federal building around noon Wednesday. An FBI Weapons of Mass Destruction Coordinator was also called, according to Richard Lambert, the FBI Special Agent in Charge of the Knoxville field office.
The envelope was isolated, and the powder tested on site. It tested negative for chemical, biological, or radiological threats, Lambert said.
"The material will be sent to a lab so we can determine what the powder is," Lambert said. He says his office will investigate, even thought it appears to be a hoax.
The Duncan Federal Office Building remained open through the scare, as did the IRS offices, though the mainroom was closed.
Lambert says no one was injured or exposed to anything dangerous.