Customs agents in Philadelphia say they found 8 grams of heroin stuffed inside a congratulatory greeting card addressed to someone in Washington, D.C.
The card was shipped from the Netherlands, officials said Monday. On the front of the card, written in Dutch, was the word, "Success!"
The heroin was found in a plastic bag sandwiched between two pieces of cardboard. The value of the heroin was estimated at $500.
So far, no one has been arrested.