Police say several explosive devices were found at a house during a counterterrorism raid in Melbourne.
Heavily armed police stormed the house in Greenvale, in the city's north, on Friday in a joint operation between Victoria Police and Australian Federal Police.
Balaclava-clad officers with assault rifles stood guard around a two-storey home while heavily armoured vehicles blocked off the street.
Bomb squad members in blast suits were seen searching the property.
A source has confirmed the joint operation relates to an alleged terrorism plot, the ABC reported.
Police have not yet confirmed if there have been any arrests or if the operation relates to any other recent anti-terrorism raids.
The "improvised explosive devices" were removed from the house, which was declared safe, police said in a statement.
Police set up a 300-metre exclusion zone around a nearby reserve before detonating the explosives.
The raid comes just weeks after police arrested several teenagers during anti-terror raids in Melbourne's south-east.