Embodiments herein relate to e.g. a method performed by a radio network node (12) for handling system information of a wireless communication network. The radio network node receives, from a wireless device (10), a 5 request for transmission of at least a part of the system information, wherein the request is associated with an indication indicating that the request is for a transmission of the at least part of the system information. The radio network node further transmits, in a transmission, the requested at least part of the system information to the wireless device, wherein one or more properties of 10 the transmission are adapted based on the received request; and wherein the transmission is beamformed towards the wireless device and/or the transmission is performed within a time interval from the received request.