If persons who are heard in pre-trial investigation speak Finnish or Swedish and the hearings are interpreted, the hearings should be recorded and the recording should be attached to the material.
A case can be transferred already in the pre-trial investigation stage if every measure that can be done in the requesting state has been fulfilled. In all the situations, a prior discussion about transfer with the Office of the Prosecutor General is advisable (email kv.syyttaja@oikeus.fi).