Upon request, an MSB must make its list available to FinCEN and any other appropriate law enforcement agency (including, without limitation, the examination function of the Internal Revenue Service in its capacity as delegee of Bank Secrecy Act examination authority). Requests for agent list information must be coordinated through FinCEN in the manner and to the extent determined by FinCEN.

31 CFR 1022.380(d)(1) and (d)(2)(ii) (formerly 31 CFR 103.41(d)(1) and (d)(2)(ii))