On 3 and 4 April 2018 hundreds of federal agents and local officers executed search warrants at about 74 houses across the Sacramento region suspected of holding industrial-scale indoor marijuana grows, plus two related business offices.[1][2] At the same time, prosecutors filed civil forfeiture actions against more than 100 houses in the region tied to the same network, in one of the largest residential forfeiture efforts in US history.[1][2]

The operation targeted a network under investigation since 2014 in which down payments on suburban homes were wired mainly from Fujian Province in China, often through straw buyers and hard-money lenders, and the houses were converted into grows whose harvests were shipped east, including through Atlanta, Chicago and New York.[1][2] Agents seized about 61,050 marijuana plants and some 200 kg of processed marijuana, along with 15 firearms.[1] The Associated Press also reported at least $68,500 in cash seized.[2]

None of the buyers was arrested during the operation, and prosecutors said criminal charges had not been filed at that stage.[2]