I cant understand why neither his family in Israel or his family in Australia are speaking out! Why would that possibly be?
From ynet:
He is listed as the son of Geoffrey Zygier, the executive director of the B'nai B'rith Anti-Defamation Commission based in Melbourne.
Zygier's father and his uncle, Willy Zygier, declined to comment on Thursday.
Edit:
In a different report, ynet writes:
Moreover, Zygier's defense attorneys – as well as his family – were required to sign confidentially and nondisclosure agreements vis-à-vis the State; which now prevents them from confirming or denying any of the details.
So the question still asks why would the family agree to such a request, and specifically at this point why is his family in Australia still remaining quiet?