Counter-terrorism police have raided multiple properties as investigations continue into the firebombing of a synagogue.
State and federal officers executed search warrants in Melbourne's northern suburbs on Friday over the attack on the Adass Israel Synagogue at Ripponlea in the city's south on December 6.
Two of the synagogue's three buildings were destroyed in the early-morning blaze, forcing members of the congregation to flee.
Police issued a statement confirming the raids on Friday but said there were no further updates and the investigation remains ongoing.
In May, terrorism investigators revealed they had linked a blue 2020 Volkswagen Golf sedan to the attack. The vehicle was seen driving past the synagogue multiple times before the firebombing.
Victoria Police Counter Terrorism Command's Tess Walsh said the blue Golf was stolen in November and used in a Bundoora arson and shooting on the night of the synagogue attack, and in a separate arson at South Yarra's Lux nightclub in November.
CCTV footage showed three masked individuals wearing hoodies exiting the car, then using an axe to smash through the synagogue's entrance before setting it alight.
The alleged criminals were filmed returning to the car multiple times to get more jerry cans, which were poured inside the synagogue before the liquid was ignited.
Yumi Friedman, founder of Yumi's Dips, told AAP at the time he preparing for morning prayer when the attack began.
He was forced to flee after hearing a "big bang on the door with a sledgehammer", Mr Friedman said.
Police have renewed their call for witnesses or anyone with footage of the incident to come forward.
"This investigation continues to be treated as a priority including the involvement of significant resources across all agencies," a police spokesperson said on Friday.
CCTV from more than 1400 locations has been scoured by police who believe multiple offenders are directly and indirectly linked to the synagogue arson.
