A woman suspected of mailing an envelope containing ricin poison, which was addressed to the White House, was arrested at the New York-Canada border, three law enforcement officers told The Associated Press on Sunday.
The letter had been intercepted earlier this week before it reached the White House. The woman was detained by U.S. Customs and Border Protection agents at the Peace Bridge border crossing near Buffalo and is expected to face federal charges, officials said. Her name was not immediately released.
Read also: Ricin found in White House originated in Canada, police say
The letter to the White House appeared to have originated in Canada, the Royal Canadian Mounted Police said. He was intercepted at a government facility that checks mail addressed to the White House and President Donald Trump and a preliminary investigation indicated that he tested positive for ricin, according to officials.
The officials were not authorized to publicly discuss the ongoing investigation and spoke on condition of anonymity.
There have been several previous cases in which US officials have been attacked with ricin sent through the mail.
Read also: White House receives envelope containing poisonous ricin: official
A Navy veteran was arrested in 2018 and confessed to mailing envelopes to Trump and members of his administration that contained the substance from which ricin is derived. The letters were intercepted and no one was injured.
In 2014, a Mississippi man was sentenced to 25 years in prison after sending ricin-dusted letters to President Barack Obama and other officials.
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