The last of 8 people involved in a southern Minnesota counterfeiting ring has admitted her guilt. 34-year-old Heather Ann Cameron of Albert Lea pleaded guilty Thursday to one count of counterfeiting US currency. Cameron was indicted along with seven co-defendants in August. They were accused of operating a counterfeiting ring that targeted businesses along the Interstate 35 corridor between the Twin Cities and Iowa. In her plea agreement, Cameron admitted that from last December through June of this year, she chemically washed $5 bills and reprinted them as $100 bills. She also admitted she intended to defraud businesses by passing those bills. Cameron’s seven co-defendants pleaded guilty earlier in the altered bill scheme. Each defendant faces a potential maximum sentence of 20 years in prison.