Police arrested 10 people, seized $70,000 in harvested marijuana and shut down seven grow houses during raids Wednesday in San Francisco, San Mateo County and the East Bay.

The searches, which targeted an Asian drug-trafficking network, netted $100,000 in cash, 2,200 marijuana plants in various stages of growth, 22 pounds of pot and four guns, according to a statement from the San Mateo County Narcotics Task Force. Undercover agents had spent a year investigating the operation.

Of the 15 homes raided by agents from the county task force, state and federal drug agencies and U.S. Immigration and Customs Enforcement, seven were houses where pot was being grown. The remaining eight were residences of the alleged conspirators.

Police said there is no evidence the growing operations were connected with medical marijuana collectives. "All evidence suggests that this operation was strictly a for-profit endeavor," the statement said.

The people arrested -- Queenie Y.K. Yee, 38, Bill Dao Bian Qi, 33, Wilson S. Cheung, 50, all three of Millbrae; Winnie Jiang Phan, 47, Qian Wen Li, 47, Hu Weiren, 49, Jia Li Hu, 20, Weix Lian, 48, Wendy Lau, 49, all six of San Francisco; and Zei Wei Chen, 42, of Alameda -- are being held in lieu of $1 million bail each.

Nearly all face charges of marijuana cultivation, marijuana possession for sale, criminal conspiracy and theft of utilities. They are due in San Mateo County Superior Court on Thursday for arraignment, according to police.


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Contact Joshua Melvin at 650-348-4335.