Sounds like they are trying to set you up for another scam..
The U.S. Food and Drug Administration is warning the public about criminals posing as FDA special agents and other law enforcement personnel as part of an international extortion scam.
The criminals call the victims -- who in most cases previously purchased drugs over the Internet or via "telepharmacies" -- and identify themselves as FDA special agents or other law enforcement officials.
The criminals inform the victims that purchasing drugs over the Internet or the telephone is illegal, and that law enforcement action will be pursued unless a fine or fee ranging from $100 to $250,000 is paid. Victims often also have fraudulent transactions placed against their credit cards.
The criminals always request the money be sent by wire transfer to a designated location, usually in the Dominican Republic. If victims refuse to send money, they are often threatened with a search of their property, arrest, deportation, physical harm, and or incarceration.
Anyone receiving a telephone call from a person purporting to be an FDA or other law enforcement official who is seeking money to settle a law enforcement action for the illegal purchase of drugs over the Internet should refuse the demand and call the FDA’s Office of Criminal Investigations Metro Washington Field Office at (800) 521-5783 to report the crime.
FDA special agents and other law enforcement officials are not authorized to impose or collect criminal fines. Only a court can take such action, with fines payable to the U.S. Treasury.