The Central Tracing Agency (CTA) exists to clear away such doubt, and to do so it has fixed as its four main tasks:
1. to obtain, register, process and pass on all information that can identify persons whose case has been taken up by the ICRC;
2. to ensure exchanges of family correspondence where normal communications are interrupted;
3. to trace persons whose relatives have no news of them or who have been reported missing;
4. to organize the reuniting of families, transfers of persons and repatriations.