There was also mail stolen from an investment company that netted the suspects account information from more than 100 people, Fahy said.
One of them is suspected to have been stolen from Loma Verde Elementary School during a 2009 break-in, Fahy said.
After the August arrests, police confiscated two more computers that were in the possession of one of the suspects. He said the identities of several of the Marin mail theft victims were used to make fake checks that were cashed in Sonoma County. "Most of those mailboxes were in rural areas with high-dollar property values," Fahy said. The stolen mail came from Mill Valley, San Rafael and Novato. The computer crimes task force, a five-county agency with investigators from throughout the region and managed by Marin District Attorney Ed Berberian, has taken over the investigation. "That officer being very proactive in his job has probably saved hundreds of victims their identity theft, and I don't know how many thousands of dollars." Charges have been filed against three Marin County men in connection with suspected identity theft and counterfeiting, said Barry Borden, Marin's chief deputy district attorney. "They were right in the middle of making fraudulent checks, counterfeit money, credit cards and drivers' licenses," Fahy said. "We do that from time to time." Patrick Fahy, a detective with the Northern California Computer Crimes Task Force in Napa, said Dunbar dropped in at an opportune moment. "I checked the registry for the hotel just to see who was there," Dunbar said. 27, when Novato police Officer Blake Dunbar checked up on a parolee whose name he recognized on a log as one of the guests at the Days Inn motel on Redwood Boulevard. Authorities are investigating an elaborate counterfeiting operation involving stolen mail from throughout Marin County, credit card numbers of more than 200 people, counterfeit cash, fake checks, printers and laptop computers. $1 bills had been washed with chemicals and reprinted as $50 and $100 bills. Authorities investigate elaborate counterfeit, ID theft ring Police confiscated more than $1,600 in counterfeit bills.