Formal requests must almost always be translated if the official language of the country to which the request is being sent is not English. The Office of International Affairs (OIA) has no interpreters. Arrangements for translation must be made and paid for by the United States Attorney's Office. In Federal Bureau of Investigation (FBI) cases, the FBI may be able to translate the request, but time considerations could dictate that a commercial service be used. In some cases, translations can be made overseas, with the requesting office reimbursing the American Embassy or consulate by providing accounting information (available from your administrative officer) against which to charge the expense.
Most countries will not act upon a request for assistance until they receive the translation. In every case requiring a translation, prosecutors must reach a clear understanding with OIA about who will secure the translation and send it overseas.