Part 4
Mutual Assistance through the Execution of Decisions and Orders of the Court
ยง 41
Enforcement of Prison Sentences
(3) Upon request of the Court, the convicted person shall be surrendered to the Court or to a state designated by it. To the extent the Court does not explicitly notify that the convicted person is to be released from custody, he shall be held in custody until surrender to the Court or to the authorities of a state designated by it. Should the Court at a later point in time request a resumption of the enforcement of a criminal penalty already partially enforced domestically, the documents referred to in para. 1 number 1 are not required to be resubmitted. Para. 1 sentence 1 number 2 and sentence 2 apply mutatis mutandis.
Transfer of sentenced person to another State
EDIT.