DENVER (KDVR) — The Boulder County Sheriff's Office Wednesday morning executed nine search warrants across several different Denver metro counties and cities as part of a "grand jury investigation," county officials said.

The sheriff's office in a Facebook post announced the operation, saying the warrant executions began at 7 a.m. in unincorporated Boulder and Adams Counties, and the cities of Denver, Westminster, Wheat Ridge, Federal Heights and Johnstown. The sheriff's office identified more than 20 law enforcement agencies involved in the operation, including drug task forces and the Federal Bureau of Investigation.

U.S. Immigration and Customs Enforcement is not involved in the operation, according to the sheriff's office.

The search warrants were for seven residences and two storag

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