Method performed by a first communication device operating in a wireless communications network. The wireless communications network comprises a group of communication devices. The first communication device determines that a number of communication devices, comprised in the group of communication devices, having reported that data about a position of a second communication device comprised in the group of communication devices has not been received within a time period, is above a threshold. The first communication device then initiates transmitting an indication to at least one receiving device, indicating a result of the determination. Also disclosed is a method by a third communication device comprised in the group. The third communication device starts a timer defining the time period and, in the absence of the data received within the period, sends a notification of expiration of the timer.