The white powdery substance that was sent to Hillary Clinton’s campaign office in New York tested negative for harmful substances in a preliminary investigation, police said.
Clinton campaign workers had opened an envelope containing the white substance Friday, police said.
The envelope had first been delivered to Clinton’s midtown Manhattan office, said Lt. Thomas Antonetti of the New York Police Department. It was then transferred to her Brooklyn headquarters.
Workers evacuated the 11th floor of the Brooklyn office in the evening.
The initial report indicated that the envelope had been opened in the Manhattan office and then passed on to her headquarters in Brooklyn. It wasn’t clear why the opened envelope had been transferred.
The NYPD is investigating the incident. The U.S. Secret Service and the Office of Emergency Management are also involved, according to the NYPD.
Developing story — more to come