flash roll

plural flash rolls

1. A bundle of banknotes used by undercover law enforcement to convince a criminal that they want to go ahead with an illegal transaction.

   Some agencies have sealed flash rolls that have been precounted with the serial numbers recorded for use in an operation on short notice.

   2003, Gregory D. Lee, Global Drug Enforcement: Practical Investigative Techniques, page 159

   1 more example

   The sources of flash-rolls will vary from jurisdiction to jurisdiction, but if the investigating agency has no specific fund designated for a flash-roll, funds may be borrowed from the city or state treasury, or from local financial institutions […]

   2001, Michael D. Lyman, Dominique Van Neste, Practical Drug Enforcement, page 40