Donald Trump's son Eric Trump received a threatening letter with a white substance at his Manhattan residence late Thursday, according to reports. In this photo, Donald Trump (left) speaks as his son Eric looks on during a caucus night watch party at the Treasure Island Hotel & Casino in Las Vegas, Nevada, Feb. 23, 2016.
A threatening mail containing a white powdered substance was sent to Donald Trump’s son Eric's posh Manhattan residence late Thursday, a source told CBS News. The Secret Service, FBI and New York Police Department are currently investigating the incident.