Excerpt:
More than 100 people - most of them women - are converting to Islam in Sydney each year, and experts warn some new converts are more likely to adopt extremist elements of the religion.
Such radicalism was highlighted by the death last week in Syria of former Queensland Anglican schoolgirl turned Muslim jihadist Amira Karroum, 22, who is believed to have been killed by rebel fighters in Aleppo alongside her US-born husband Yusuf Ali.
Ms Karroum had adopted an extremist form of the faith, praising terrorist Osama bin Laden and supporting the violent Muslim riots in Sydney in 2012.