A method, performed by a Private Mobile Radio, PMR, Tunnelling Controller, PTC, node for extending PMR group communications to a public radio access based network for a wireless terminal, said wireless terminal being served by the public radio access based network and a PMR based network, the method comprising: receiving, from a gateway node in the public radio access based network, a registration request originating from the wireless terminal, said registration request comprising identification information for the wireless terminal; establishing access with the public radio access based network on behalf of the wireless terminal utilizing said identification information; and establishing access with the PMR based network on behalf of the wireless terminal utilizing said identification information, characterized in that the establishing access with the PMR based network on behalf of the wireless terminal utilizing said identification information further comprises: sending, to the wireless terminal, a request to initiate a registration procedure with the PMR based network when the wireless terminal is configured to be served by the public radio access based network and the PMR based network and when said wireless terminal has not previously registered with the PMR based network; and receiving, from the PMR based network, group communications for the wireless terminal and forwarding, to the wireless terminal, the received group communications when the wireless terminal is configured to be served only by the public radio access based network. receiving, from a gateway node in the public radio access based network, a registration request originating from the wireless terminal, said registration request comprising identification information for the wireless terminal; establishing access with the public radio access based network on behalf of the wireless terminal utilizing said identification information; and establishing access with the PMR based network on behalf of the wireless terminal utilizing said identification information, characterized in that the establishing access with the PMR based network on behalf of the wireless terminal utilizing said identification information further comprises: sending, to the wireless terminal, a request to initiate a registration procedure with the PMR based network when the wireless terminal is configured to be served by the public radio access based network and the PMR based network and when said wireless terminal has not previously registered with the PMR based network; and receiving, from the PMR based network, group communications for the wireless terminal and forwarding, to the wireless terminal, the received group communications when the wireless terminal is configured to be served only by the public radio access based network. sending, to the wireless terminal, a request to initiate a registration procedure with the PMR based network when the wireless terminal is configured to be served by the public radio access based network and the PMR based network and when said wireless terminal has not previously registered with the PMR based network; and receiving, from the PMR based network, group communications for the wireless terminal and forwarding, to the wireless terminal, the received group communications when the wireless terminal is configured to be served only by the public radio access based network.