What we know about Tammie Farrugia and Scott Marshall, the pair allegedly linked to the Dural caravan explosives

Tammie Farrugia and her partner Scott Marshall have allegedly been named in a search warrant connected to a caravan stuffed with explosives and containing a list of Jewish synagogues.

The ABC has obtained security footage showing their Liverpool home was raided by police two days after the van was discovered at Dural in the city's north-west.

The footage, captured by the doorbell camera of a neighbour, shows a riot squad officer, forensic officers, detectives and a sniffer dog attending the site for at least two hours.

The unit door appeared to have been damaged by police gaining entry.

The couple are considered to be on the "periphery" of a broader antisemitism terror investigation, with police suggesting those involved do not appear to hold a "specific ideology" and that there was a level of 'coordination above those perpetrating the offences'.

Ms Farrugia and Mr Marshall have not been charged in connection to the Dural caravan. Both are in custody over other matters and it's unclear what officers were searching for.

On December 6, 34-year-old Ms Farrugia posted on TikTok that she was looking for a caravan to purchase.

"ANYONE GOT A CARAVAN FOR SALE NEED ONE ASAP I'VE GOT $$$$$$" she wrote on social media.

The following month, on January 20, Ms Farrugia was arrested over a separate incident.

The Liverpool woman was accused of taking part in a criminal group that sprayed antisemitic graffiti on homes and torched a car in Woollahra in Sydney's east on December 11.

Prior to the attack she allegedly posted to social media "anyone got any plastic jerry cans plz let me know".

On December 24, police conducted an earlier raid on the Liverpool apartment she shared with Mr Marshall, allegedly seizing knuckledusters, a taser, six cloned number plates, and the keys to a stolen Mitsubishi ASX and drugs, according to police facts tendered to court.

Mr Marshall, 36, was charged in relation to the alleged stolen goods and prohibited weapons. He has pleaded not guilty and did not apply for bail.

Ms Farrugia was arrested and charged over the alleged supply and possession of a prohibited drug and granted conditional bail.

Ms Farrugia later posted on Facebook that the pair had been "raided Xmas Eve he got locked up. Our phones got seized and other things".

"F*** this s*** is killing me not having u by my side or hearing you're voice if I could trade places with u I would love u so much baby Scott Marshall."

Ms Farrugia was arrested again three weeks later over the Woollahra attack and remains in custody.

She is one of 10 people Strike Force Pearl have charged in relation to antisemitic incidents in Sydney.

NSW Police Deputy Commissioner David Hudson suggested those alleged to be involved did not appear to be motivated by racism.

"We haven't identified any of the individuals of the 10 we've charged with any specific ideology that would cause them to commit the acts."

Mass casualty event 

Police discovered the caravan packed with explosives in the city's north-west 12 days ago.

However, the public was only made aware of the potential terror threat on Wednesday after the news leaked to a Sydney newspaper.

"I don't think it's appropriate for the police to say, or the government to say, when a CT [counterterrorism] enquiry begins we're going to issue a media release and have it in the public domain," Premier Chris Minns said on Thursday.

Authorities described the van as having the potential to cause a "mass casualty event" with a blast zone of more than 40 metres.

Detectives are trying to ascertain whether the Powergel explosives found were stolen from a mining site.