Disappearance of Australian in North Korea 'troubling', Scott Morrison says

PM says he has no new information on Alek Sigley, while Bob Carr says finding him will require 'deft diplomacy'

Prime minister Scott Morrison says he's been unable to obtain any new information about the "troubling" disappearance of Australian man Alek Sigley in North Korea.

Family and friends of Sigley, who has been living and studying in Pyongyang, have not been able to speak to the 29-year-old from Perth since Tuesday, which they say is "unusual".