Prince William County hazmat team determines powder not hazardous.

November 23, WUSA 9 Washington – (Virginia) The Prince William County Courthouse in Manassas, Virginia, was partially evacuated about 11 a.m. November 23 because of a suspicious white powder, Prince William Fire officials said. The county’s HAZMAT tested the powder and determined it is not hazardous. The people who opened the envelope are being interviewed by the FBI. A Prince William County Fire and Rescue spokesperson told 9News Now three people were exposed to the powder which fell out of an envelope. The mail room and cafeteria were evacuated. The FBI Joint Terrorism Task Force is also on the scene assisting with the investigation. A spokesperson for the sheriff’s department said the upper floors of the courthouse are open and conducting “business as usual.” Source: http://wusa9.com/news/breaking/story.aspx?storyid=121734&catid=158