An envelope of toxic substances addresses the White House

An envelope addressed to the White House contained a substance identified as the recital, a deadly toxic substance, several media reported on Saturday, citing a federal official informed of the issue.

The Zarfi, believed to have come from Canada, was seized at a government post centre before arriving at the White House, the New York Times, CNN and Wall Street Journal reported.

Asked about the reports, the FBI said the agency and “The United States Secret Service and Postal Inspection Service partners are investigating a suspicious letter received at a government post office facility. At this moment, there is no threat to public security”.

The White House and the US Secret Service refused to comment. Rizina is in natural condition, but a deliberate action must be taken to turn it into a biological weapon. Rizina can cause death within 36 to 72 hours of exposure to as little as a pintip. No known antidote exists.

There have been numerous incidents involving envelopes posted with recitals for American officials. In 2018, a person from Utah, William Clyde Allen III, was charged with threats related to innovation, including posting a threat against Trump and other federal officials including FBI Director Christopher Wray. All the envelopes sent contained recitals. Allen remains in custody.

Two people were sentenced to separate incidents for sending letters to then-President Barack Obama. In May 2014, a Mississippi person, James Everett Dutschke, was sentenced to 25 years in prison after being found guilty of sending letters with Mr. Obama's deadly substance as well as an American senator and a state judge.

In July 2014, an actor from Texas was sentenced to 18 years for sending letters containing recitals to Mr. Obama and former New York Mayor Michael Bloomberg.