OAKLAND (KPIX 5) — East Bay police and federal agents have been spending the day going through boxes and boxes of evidence in a counterfeit money sting.

Secret service agents and the Department of Justice raided a home on Lacy Street in Oakland around 6 a.m., confiscating evidence in a multi-million dollar counterfeit case.

READ MORE: Atmospheric River: North Bay Communities Prepare For Major Storm; Flood Concerns In Fire Scarred Areas

A family lives in the home, but agents wouldn’t disclose who they were, and exactly what they confiscated.

Multiple raids were conducted throughout the day.

In Oakland on Douglas Street, another raid was linked to the counterfeit investigation – One man taken into custody on charges related to evidence found at the home.  The secret service said counterfeiters have printed and distributed $5 million in counterfeit bills, with the majority of those being $100 bills.

READ MORE: Petaluma 13-Year-Old Arrested Following School Bomb Threat

The investigation lasted a year, and was centered in the Bay Area.

Authorities say the counterfeiters used a sophisticated printing method.

In Castro Valley, another home was raided. The Secret Service, and the Department of Justice searched the home and cars for nearly six hours.

No one was arrested there, but evidence was taken from the home.

MORE NEWS: COVID: Certain California Prison Guards Must Be Vaccinated, Judge Rules