A 21-year-old Darien man who was attending college in Florida, has been formally charged in a national, multimillion-dollar fraud scheme.

It's a case that U.S. officials say allegedly resulted in nearly 10,000 fraudulent returns and more than $3 million in losses from retailers.

According to an indictment, Matthew Frederic Bergwall accessed compromised employee accounts from a multinational company.

He and several others are accused of fraudulently requesting refunds and keeping merchandise.

U.S. officials say Bergwall also offered up this illegal service for sale. He's charged with conspiracy to commit computer and mail fraud, and mail fraud.