A Melville man was arrested Thursday and charged with using fake buy-one, get-one-free coupons to buy $7,000 worth of power tools at Home Depot stores, Nassau County police said.

Dianjeng Jiang, 41, of 12 Reinhart Ct., was arrested outside his home just before 7 a.m. He was charged with third-degree grand larceny and second-degree possession of a forged instrument, police said.

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Police said that, beginning in January 2011, Jiang was involved in "a scheme using fraudulently created manufacturer coupons" for Milwaukee and Bosch power tools that enabled him to buy items under a BOGO -- or, buy-one, get-one-free arrangement -- from Home Depot stores throughout Nassau County and elsewhere.

Police said Jiang purchased the items and then, at a later date, returned the merchandise for a cash refund.

The fake deals bilked the stores out of more than $7,000, according to police.

Jiang faces arraignment Friday in First District Court in Hempstead, police said.