More than 40 people have been arrested this week, said Emily Langlie, a spokeswoman for the U.S. Attorney's Office in Seattle.
The sweeps Wednesday and Thursday were part of two distinct investigations into two different organizations, she said. Federal investigators were coordinating with each other because the two drug organizations were believed to occasionally work with each other.
Warrants served Wednesday included Lynnwood, Edmonds, Mountlake Terrace and Marysville.
Both drug organizations were distributing significant amounts of methamphetamine, heroin and cocaine, Langlie said.
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