D.C. Mun. Regs. tit. 24, § 2405
2405.1 All callers so requesting shall be given an identifying number to preserve the caller's anonymity. Although every effort will be undertaken to maintain the caller's confidentiality, complete anonymity cannot be absolutely guaranteed. Further confidential information and identification will be necessary in the event that the caller later becomes entitled to a reward.
SOURCE: Final Rulemaking published at 41 DCR 6037, 6041 (August 26, 1994).