AllNews'Sydney Gunman Mental Instability' - 1 News Result(s)Siege Gunman Had History of Mental Instability and Extremism: Tony AbbottWorld News | Reuters | Tuesday December 16, 2014 Australian Prime Minister Tony Abbott said on Tuesday the gunman behind the Sydney cafe siege was well known to authorities and had a history of mental instability. www.ndtv.com'Sydney Gunman Mental Instability' - 1 News Result(s)Siege Gunman Had History of Mental Instability and Extremism: Tony AbbottWorld News | Reuters | Tuesday December 16, 2014 Australian Prime Minister Tony Abbott said on Tuesday the gunman behind the Sydney cafe siege was well known to authorities and had a history of mental instability. www.ndtv.comYour search did not match any documentsA few suggestionsMake sure all words are spelled correctlyTry different keywordsTry more general keywordsCheck the NDTV Archives:https://archives.ndtv.com