There's discourse erupting in Sydney after a delay in publicising the discovery of a caravan full of explosives.

A Dural resident made the discovery 10 days ago, along with a note listing Jewish targets. 

Opposition leader Peter Dutton believes Australia's Government should've released details immediately.

But NSW Deputy Commissioner Dave Hudson says investigations have now been compromised, and police need to re-position the investigation.

Australian correspondent Murray Olds says inquiries are still ongoing amid a string in anti-Semitic incidents.

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