Federal officials intercepted an envelope addressed to the White House that contained the poison ricin. Photo / AP
A woman suspected of sending an envelope containing the poison ricin, which was addressed to White House, has been arrested at the New York-Canada border, three law enforcement officials told The Associated Press.
The woman was taken into custody by US Customs and Border Protection officers and is expected to
face federal charges, the officials said.
The letter addressed to the White House appeared to have originated in Canada, the Royal Canadian Mounted Police have said.
The officials were not authorised to discuss the ongoing investigation publicly and spoke on condition of anonymity.
