Envelope sent to White House tests 'presumptive positive' for cyanide

Washington, March 18 (ANI): An envelope delivered to the White House earlier this week has registered a "presumptive positive" test result for cyanide, a Secret Service spokesman said. The letter was received on Monday by a facility that screens mails for the White House and is located away from its grounds and the surrounding buildings in Washington, reported Fox News. Spokesperson Robert Hoback said that the envelope tested negative initially however, a second test on Tuesday yielded "presumpt