The operation involves the RCMP and Canadian special operations forces, as well as public health. One of Canada's highly secretive military counter-terrorism units is on the scene — the Canadian Joint Incident Response Unit (CJIRU). CJIRU is comprised of special forces operators who are experts in chemical, biological, and radiological threats. Abigail Bimman has that story. And a Quebec woman identified as Pascale Ferrier has been arrested, accused of sending letters laced with ricin to Trump. Earlier on Monday, the RCMP confirmed the suspect remains in FBI custody.
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