The Australian Greens recently called on the Federal Government to request release of an Israeli judge's report into the circumstances surrounding Mr Zygier's death.
The 34-year-old was detained for alleged Israeli national security offences and allegedly hanged himself in a suicide-proof cell in December 2010.
It's believed he worked for the Israeli intelligence agency Mossad.
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Senator Carr has told Santilla Chingaipe establishing the truth about Mr Zygier's death is dependent on co-operation from the Israeli government.
