Initial testing of white powder found in envelopes at 26 Federal Plaza indicates a substance similar to Boric acid. This compound is generally non-toxic but can be hazardous with excessive exposure. The building was evacuated as a precaution, with no one reported feeling ill. The investigation is ongoing, with the letters sent to an FBI lab in Quantico, Virginia for further testing. The FBI has not disclosed the content of the letters, and a senior official notes that sending such letters is a crime.
Boric acid generally isn't toxic, but can be in cases of excessive exposure. Testing of the substance found at 26 Federal Plaza is ongoing, as the building, which was evacuated amid Thursday night's scare, reopens on Friday.
The five envelopes were discovered in a mailroom for ICE's Enforcement and Removal Operations, on the ninth floor, a source told NBC New York. Other ICE offices are located on the floor above it.
The letters will be sent to an FBI lab in Quantico, Virginia, for additional testing. The FBI did not state what was written on the letters that accompanied the powder.
Sending threatening letters of this nature, whether real or a hoax, is a crime,
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