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.
Police are still investigating who mailed the package, said police Sgt. Scott Warren.