A suspicious envelope mailed to U.S. Sen. Mike Crapo’s Lewiston office was determined Friday not to contain any type of hazardous materials.

The letter, mailed to the Idaho Republican’s office in the 300 block of D Street, had indications on the envelope that caused staff to believe it could contain possibly dangerous materials, according to a news release.

Staff called the U.S. Capitol Police on Friday, who determined local law enforcement should handle it. Later, an official from the U.S. Postal Inspector’s Office responded.

The envelope was tested for items, including explosives, radiological and biological hazards, and ultimately cleared.

There was no immediate danger to the public, no injuries and no streets or businesses were evacuated or shut down during the six-hour ordeal, according to the release.

The Lewiston Police Department worked with the FBI and the U.S. Inspector’s Office, among others.

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