The RCMP said Saturday it is working with the FBI after federal U.S. officials intercepted an envelope addressed to the White House that contained the poison ricin. "The RCMP can confirm that it has received a request for assistance from the FBI in connection with a suspicious letter sent to the White House," spokesperson Dan Brien told CBC News in an email. The letter was intercepted at a government facility that screens mail addressed to the White House and U.S. President Donald Trump, an official told The Associated Press. A preliminary investigation indicated it tested positive for ricin, a poison found naturally in castor beans, the official said. An American flag flies at half-staff over the White House in Washington on Saturday.

Source: CBC News September 20, 2020 00:00 UTC