Santa Rosa police detectives served search warrants at three locations simultaneously at about 9:30 a.m. Tuesday. The warrants were served in the 1400 block of Apple Creek Lane, the 200 block of Apple Creek Lane and in the 500 block of Arrowood Drive.
During the searches, investigators found "a substantial amount of evidence" related to the counterfeiting of California driver's licenses, Social Security cards and permanent U.S. resident cards.
They also recovered materials related to the manufacturing of government documents from other states, police said.
Police arrested 30-year-old Jhonathan Ramirez, 29-year-old Guadalupe Lopez, 38-year-old Enrique Garcia, and 35-year-old Dilery Santiago. They were booked into Sonoma County jail on charges of identity theft and counterfeiting.
Police will be working with the Social Security Administration and the California Department of Motor Vehicles to find potential identity theft victims who may have had their identities compromised.
Detectives have determined that some of the driver's license and Social Security card numbers used in this operation were linked to real people who are likely unaware that their information has been stolen.