A man claiming to own the Dural property linked to a counterterrorism investigation says police broke down the front door and handcuffed his tenant.

Australian police have said they foiled a potential antisemitic attack on discovering a trailer packed with explosives in northwest Sydney, alarming the Jewish community following a spate of arson and graffiti incidents.

NSW Premier Chris Minns is speaking on an ongoing investigation, after police uncovered a caravan carrying items purportedly illustrating a terror plot.

A terrorism investigation has been launched into an explosives-laden caravan found in Sydney which is believed to be linked to antisemitism.

Australian police believe explosives found on Sydney’s outskirts were evidence of a deadly escalation in a campaign of antisemitic arson and graffiti crimes that has been waged in major cities for months.

A new timeline has emerged regarding the discovery of a caravan packed with ‘mining gel’ and alleged anti-Semitic hate notes, as police throw their full resources into investigating the ‘terror’ plot.

The Australian Security Intelligence Organisation says it anticipated spikes in politically motivated violence months before a caravan laced with explosives, intended for Jewish targets in Sydney, was discovered by the side of the road 10 days ago.

NSW Police were contacted about the caravan, which had power gel explosives with the potential to a cause a "mass casualty event", alongside a document with both antisemitic sentiments and a list of targets.

The NSW Police Force is working with the Australian Federal Police, NSW Crime Commission, ASIO, Victoria Police and the Queensland Police Service. This is an ongoing investigation and is being taken seriously with all lines of inquiry being pursued. There is no ongoing threat to the community.

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The Australian Federal Police and ASIO are now involved in the investigation with police saying there is no ongoing threat to the public.