A tip from an alert employee led to the arrest of four men outside a Westbury store Sunday, charged with purchasing thousands of dollars worth of merchandise using fraudulent credit cards, police said.

The four men were arrested in a car in the parking lot of the Target store on Corporate Drive at about 12:15 p.m., Nassau County police said.

Police said officers recovered "several thousand dollars worth" of merchandise purchased with the fake cards.

Arrested were Shaquille Vickers, 20, of 150-43 Foch Blvd., Jamaica, Queens; Kevin T. Mack, 22, of 115-16 132nd St., South Ozone Park, Queens; Dorrell M. Alexander, 23, of 41-04 10th St., Long Island City, Queens; and Igmar G. Depusoir, 19, whose address was not immediately available.

Vickers was charged with one count each of third-degree and fourth-degree grand larceny, as well as two counts of second-degree possession of a forged instrument. Mack was charged with third-degree grand larceny and two counts of second-degree possession of a forged instrument, while Alexander was charged with third-degree grand larceny and three counts of second-degree possession of a forged instrument. Depusoir was charged with one count each of third-degree and fourth-degree grand larceny and eight counts of second-degree possession of a forged instrument, police said.

All four are scheduled for arraignment Monday in First District Court in Hempstead.

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Police said Vickers and Depusoir entered the Target store and were purchasing iPods using "different credit cards" when an employee recognized them as suspects who'd made purchases in the past using fraudulent credit cards.

Police said responding police officers then found the four men in the car in the parking lot and, after a stop, recovered items from the Westbury Target store -- as well as items purchased with fraudulent cards earlier Sunday at a Target store in Valley Stream.