Two other people at the residence were also taken to New York Presbyterian-Weill Cornell Medical Center as a precaution, the New York City Fire Department told NBC.
New York City police and fire department personnel responded to a call at around 10 a.m. this morning from the Trump’s apartment in Manhattan.
NBC is reporting that “multiple law enforcement officials” said that the field test as to whether the substance was a biological agent came back negative.
The outlet added that the three people taken to the hospital, including Vanessa Trump, were transported there as a precaution and that there was “no indication” that the substance inside the letter was “dangerous.”
Police are investigating the letter’s source. The Secret Service confirmed it is investigating the incident, as well.
This is a developing story.