WASHINGTON – A suspect who allegedly sent a letter containing the deadly ricin poison to the White House was arrested while trying to enter the United States from Canada, a federal law enforcement official said Sunday.
Further information on the person was not immediately available. The suspect was arrested by customs and border protection agents, a federal law enforcement official said.
The FBI said Saturday it was investigating a suspicious letter addressed to President Donald Trump that had been intercepted.
It was not clear when the letter was sent or where it was intercepted. Law enforcement officials said the poison, which is highly toxic and can cause nausea, vomiting, organ failure and death, was detected in an offsite facility that checks mail addressed to the White House.
Ricin has been confirmed in field and laboratory tests.
The suspect allegedly sent other letters to federal prisons that were discovered in several facilities, an official told NBC News Saturday. It was not immediately clear to which prisons the letters had been sent or who they were intended for.
The official said only one letter appeared to be addressed to a political figure.
Pete Williams reported from Washington and Tim Stelloh from California.