The multi-agency operation had been in the planning for months, if not years.
It was also not the first raid, with these pictures of cramped workers’ quarters somewhere in the Wanneroo district taken a couple of weeks earlier.
‘It is the largest investigation of its kind in WA history,’ Operation Polo police spokesman Samuel Dinnison said.
‘Organised Crime (squad) was the lead team with a lot of other agencies ” they have been working hard for a long time.”
Mr Dinnison said each agency ” including the immigration and tax departments, the Australian Corruption and Crime Commission and the Australian Securities and Investment Commission ” had worked for months on the ‘best plan of attack’.
‘One of us didn’t want to ruin the other’s investigation,’ he said.
They also used a combination of state and federal laws and police powers to conduct searches and accumulate evidence. Police searches of market gardens and other businesses after the big Carabooda property raid came to an end last Friday.
But police haven’t ruled out other searches after accumulated evidence is examined.