ASIO head again defends Muslim communities

The head of Australia's domestic spy agency says it investigates people based on their behaviour, not their background. The remarks came at a Senate Estimates hearing where senators were being updated on Australia's terrorism threat and other security matters.

ASIO director-general Duncan Lewis speaks during Senate estimates hearings at Parliament House in Canberra, Tuesday, October 24, 2017. Source: AAP Image/Lukas Coch