NEW YORK (CBSNewYork) — Police and the FBI are investigating a suspicious piece of mail that was sent to Donald Trump’s son, Eric.
Police were seen outside Eric Trump’s residence at 100 Central Park South early Friday morning.READ MORE: NYPD: 2 Gunmen Wanted After 10 Shot In Front Of Queens Business; 'A Brazen, Coordinated Attack'
Investigators said the letter, postmarked from Massachusetts, was opened by Eric Trump’s wife Lara Thursday night. Sources told CBS News that a white powder was found inside of the envelope.READ MORE: In Wake Of Corona, Queens Shooting, Mayoral Candidates Adams, Sliwa Offer Plans To Combat NYC Gun Violence
Lara Trump called police just after 7 p.m., triggering the response by the FBI, the NYPD and the FDNY.
Sources said the enclosed letter warned that if Donald Trump does not drop out of the presidential race, his children could be harmed, CBS2’s Janelle Burrell reported.
But a source close to the investigation said preliminary tests show that the white substance does not appear to be hazardous. Further tests are being conducted at a crime lab, WCBS 880’s Sean Adams reported.
Police were also seen Friday outside Trump Tower on Fifth Avenue, 1010 WINS’ Al Jones reported. CBS2 reached out to Donald Trump’s campaign for a comment, but has not heard back.MORE NEWS: NYC Homecoming Week Concerts Set To Go On Sale Monday
The investigation is ongoing.