A method performed by a User Equipment (UE) for handing a Radio Link Failure (RLF) on a first group of cells in a wireless communication network is provided. The UE is engaged in an ongoing communication with the wireless communication network via a first group of cells and a second group of cells. The UE detects (501) that an RLF is on one or more out of the first group of cells. The further UE sends (502) a report to a network node in the wireless communication network. The report is sent via one or more out of the second group of cells while continuing the communication with the wireless communication network. The report comprises radio link information about the RLF on one or more out of the first group of cells.