Re: BREAKING NEWS: Gunman [Daish?] takes hostages in Sydney cafe
One of the articles I read said that he posted online this year that he “used to be Rafidi and now is Muslim”. Since Rafidi is a derogatory term for Shias used by extremist Sunnis who think that Shias are not Muslim, this suggests that he was formerly nominally a shia and nominally became a sunni.