A focus on integrating Muslim youths into the mainstream would help prevent them becoming radicalised, former prime minister John Howard says.
He told the Seven Network on Sunday that some people had spent too much time in closed communities where such radicalisation could occur.
"As many people know I'm not an overwhelming fan of the doctrine of multiculturalism," Mr Howard said.
"I believe in bringing people of different races, different religions, to this country but once you're here you've got to become part of the mainstream community."
Mr Howard said Australia still faced a real threat from terrorism.
"I don't think any Australian should assume we won't have a terrorist incident here," he said.
Mr Howard also said it would not be a good idea to restart a debate about levels of Muslim immigration.
"Apart from anything else, it would be seen amongst friends such as Indonesia and Malaysia as a negative thing," he said.
