Part V – Domestic Procedures for Other Types of Co-operation
60. Refusal of request.
(1) The Minister shall refuse a request for assistance under this Part only if –
(b) the ICC advises that it does not intend to proceed with the request for any reason, including but not limited to a determination of the ICC that article 98 of the Statute applies to the request; or
Obligations towards the sending State
Obligations arising out of State or diplomatic immunity
EDIT.