BILLINGS, Mont. (AP) — A father and daughter have acknowledged running a drug ring through the mail from their Billings home.

The Billings Gazette reported Tuesday that 30-year-old Brittany Green and 64-year-old Gregory Green pleaded guilty to drug charges earlier this year.

The Greens’ home was raided in January, and a search turned up the opioid carfentanil, hundreds of grams of methamphetamine and thousands of pills of the anxiety medicine Xanax. Investigators say they also found paperwork in the home office that indicated Gregory Green was using Bitcoin payments as part of the drug trafficking operation.

Gregory Green is scheduled to be sentenced in August, and his daughter is set for sentencing in October.

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Information from: The Billings Gazette, http://www.billingsgazette.com