A Chinese organized crime group hacked into retail giant Staples, used that access to fraudulently issue millions of dollars worth of gift cards for stores like Target and Sephora, then went on a nationwide shopping spree, shipping many of the stolen electronics and other products back to China as part of a massive retail theft operation, 404 Media has learned.

The finding, based on a review of court records, reveals the scale at which some organized crime groups are fleecing U.S. retailers, with entire warehouses dedicated to housing the merchandise. The hack of Staples, which has not been previously reported, signals just how sophisticated some of these operations have become.