Workers were ordered out of the Baltimore building that hosts the national headquarters of the
At about 1:45 p.m., Wolf said authorities had determined that the letter was "a non-hazard, non-suspicious letter." He declined to say what triggered concerns about the letter, citing concerns about copycats.
Baltimore Fire spokesman Roman Clark said that hazardous materials teams had been sent to the location.
Maj. Johnny Delgado, the commander of the Northwestern police district, said that around 11:30 a.m., people inside the bulding noticed a suspicious letter and the building was evacuated. He said people who had come into contact with the letter have been "isolated."