Police operation underway south of Montreal tied to White House ricin letter: RCMP

ST-HUBERT, Que. — The RCMP says it’s conducting an operation south of Montreal in connection with an envelope containing the poison ricin that was sent to the White House.

Police said today the operation is occurring on Vauquelin Blvd. in St-Hubert, on Montreal’s south shore.

The Associated Press reported Sunday a woman suspected of sending the envelope was arrested at the New York-Canada border.

Canadian law enforcement was called in to help the FBI investigate after American authorities found evidence that the suspicious letter had originated in Canada.

More coming.