Oregon State Police say that the substance found at the state Department of Revenue early this morning is not dangerous.
The Salem Statesman-Journal reports that Lt. Michael Peterson says the area will soon open up to traffic.
Kobbi R. Blair / Statesman Journal
Statesman Journal photoMembers of the Oregon Army National Guard 102nd Civil Support Team, suits up to help Salem HAZMAT to check out a suspicious substance found in the mailing room of the Oregon Department of Revenue this morning. A portion of the building on Center Street was evacuated this morning around 7 a.m. because of a suspicious powdery substance found in the mailing room area.
The suspicious substance was deemed a non-threat and its consistency resembles that of a protein shake.
Officials have not yet confirmed what the substance is. Revenue employees are being let back into the building.
Early this morning, most of the building was cleared, after an employee opened an envelope in the mail room, and powder flew out.
This story originally appeared on Oregon Public Broadcasting.