A postal worker caught a whiff marijuana as he worked in the Pasco post office on Wednesday.
The odor was coming from a package heading to Mr. Black Mamba of Rochester, Mass.
The employee called police, who got a search warrant and found seven pounds of pot in a plastic bag.
While the drug is legal in both states, it’s still not legal to drop it in the mail.
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Police are still investigating who mailed the package, said police Sgt. Scott Warren.