A boutique owner from Long Island, New York, has been charged for allegedly selling millions of dollars worth of counterfeit designer items.

Lindsay Castelli, 31, surrendered to police last Friday, the Nassau County Police Department said in a release shared Tuesday.

Authorities’ began investigating Castelli’s store- Linny’s Boutique last April and said that it “contained thousands of synthetic heat-sealed counterfeit labels along with assorted clothing and jewelry.” She is the only owner of the boutique. Asset Forfeiture Detectives executed a search warrant at the store.

“During the search, Detectives removed 22 printing press machines and various counterfeit items labeled from Gucci, Chanel, Prada, Dior, Ugg, and Louis Vuitton,” police said in the release, adding that the items altogether were worth more than $40 million. They later found that the alleged fake items were being sent “all over the United States.”

In a brief news conference captured by FOX 5 New York, Nassau County Police Commissioner Patrick Ryder held up a black hat with a smiley face on it and said, “They would take a hat- a $3 hat with a 50 cent item on the side here. They would heat-seal it onto the hat and then sell this hat for $300.” He then presented a pink sweatshirt, stating, “A simple $10 sweatshirt, you put the Chanel brand on it, it sells for $5,300. A $10 sweatshirt with a counterfeit sticker $5,300.”

“This was a sophisticated operation,” said Nassau County DA Anne Donnelly. “A store-front that you could have walked by hundreds of times and not realized what was in it was thousands and thousands of dollars of counterfeit goods.” She added a warning for other counterfeit shop owners: “We will arrest you and seize your merchandise. It’s not worth it.”

Castelli has been charged with trademark counterfeiting in the second degree. She has been released on a desk-appearance ticket, her first court appearance will be at First District Court in Hempstead on Nov. 2. Her boutique has been shut down, CBS News reported.