Wireless device, radio network nodes and methods performed therein for handling neighbour relationships in a wireless network

Method performed by a wireless device (10) for handling neighbour relationships between radio network nodes (12, 13, 15) in a wireless communication network. The wireless device is served by a first radio network node (12) in the wireless communication network (1). The wireless device (10) receives (401), from the first radio network node (12), a report indication indicating that the wireless device is to report information identifying the first radio network node (12) to another radio network node (13). The wireless device receives (402) a signal from a second radio network node (13) which signal is associated with the second radio network node (13); and transmits (405), to the second radio network node (13), the information identifying the first radio network node (12).