The FBI is trying to find the person who sent two threatening letters containing deadly ricin in Spokane. One of the letters was addressed to a federal judge.
It's back to work-as-usual at Spokane’s historic Post Office after the two letters made it into the mailstream here. Police say the discovery prompted an evacuation. Authorities don't believe any workers were exposed to the highly toxic substance, but they are remaining tight-lipped about the case.
Representatives from the FBI and local police declined to comment on the ongoing investigation.