WASHINGTON (Web Desk) – An envelope addressed to the White House has apparently tested positive for cyanide, said Sky News.
The letter was received at an off-site mail screening facility on Monday, said the Secret Service, which is responsible for President Barack Obama’s security.
Initial biological testing was negative. But the agency says additional testing returned a “presumptive positive” for cyanide.
The sample has been taken to another facility for further testing.
The Intercept news website, which first reported the incident, said the envelope contained a milky substance and was in a container wrapped in a plastic bag.
There were no injuries from the envelope, according to reports.
