Authorities said they were alerted in November 2020 by Walgreens of the scam involving counterfeit coupons being used at stores in the area.
As authorities began investigating the scam, they learned that a criminal organization created the counterfeit coupons, which were sold through various social media sites and were known as "Dark Side" coupons.
According to Montgomery County authorities, the coupons were often customized to meet the request of those ordering them. During the investigation, 87 shoppers were involved in the scam. They are reportedly spread across 23 states - from Washington to West Virginia.
Investigators also found that retailers reported more than $9.7 million in losses and project there could be another $10 million in losses as the investigation continues.
Some of the stores impacted by this scam include Walmart, Target, H-E-B, Kroger and Walgreens.
Detectives reportedly executed search warrants at four locations in Harris and Liberty counties and more than 4,000 products were seized.
The FBI has joined the investigation as the suspects are spread out. So far, three people were arrested in Montgomery County and charged with engaging in an organized criminal activity.