Letter to White House Returns Presumptive Positive for Cyanide

The Secret Service was trying to determine tonight whether a letter sent to the White House contained cyanide. The letter returned a presumptive positive for cyanide, but it was being tested again to confirm the result, the Secret Service said tonight, confirming a story first reported by The Intercept.

Wednesday, March 18, 2015
ABC News
Topics: 
Secret Service
Author Info: Pierre Thomas, Mike Levine
Teaser Text: 
The Secret Service was trying to determine tonight whether a letter sent to the White House contained cyanide. The letter returned a presumptive positive for cyanide, but it was being tested again to confirm the result, the Secret Service said tonight, confirming a story first reported by The Intercept.
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