Man who had Australian visa cancelled challenges government’s ability to keep evidence secret

The high court is hearing a challenge to the federal government’s ability to keep national security information secret in courts. Photograph: Mick Tsikas/AAP

Lawyers for a man whose visa was cancelled because of an adverse Asio assessment have argued courts cannot be required to keep evidence completely secret.

The high court began hearing the man’s case on Tuesday. It challenges the federal government’s ability to keep national security information secret in merits reviews and appeals.