28 CFR § 2.91 - Supervision responsibility.
(a) Pursuant to D.C. Code 24–133(c), the District of Columbia Court Services and Offender Supervision Agency (CSOSA) shall provide supervision, through qualified Supervision Officers, for all D.C. Code parolees and mandatory releasees under the jurisdiction of the Commission who are released to the District of Columbia. Individuals under the jurisdiction of the Commission who are released to districts outside the D.C. metropolitan area, or who are serving mixed U.S. and D.C. Code sentences, shall be supervised by a U.S. Probation Officer pursuant to 18 U.S.C. 3655.
(b) A parolee or mandatory releasee may be transferred to a new district of supervision with the permission of the supervision offices of both the transferring and receiving district, provided such transfer is not contrary to instructions from the Commission.