A system, method, node and computer program for handling re-selection of a RAN (120, 130, 140) by a UE (100) is described. The UE (100) is attached via a first RAN (120, 130) to a CS control node (110) for execution of a CS service. The method comprises that the CS control node (110) receives an indication that the execution of the CS service shall be terminated. The CS control node (110) then determines whether the UE (100) shall perform re-selection of the RAN (120, 130, 140). If so, the CS control node (110) determines selection criteria for the re-selection of the RAN (120, 130, 140) and sends them to the UE (100) using Non-Access Stratum related signaling. The UE (100) receives the determined selection criteria from the CS control node (110) and re-selects the RAN (120, 130, 140), considering the received selection criteria.