Four Brooklyn men were under arrest Wednesday, charged with using a fake American Express card to fraudulently purchase Apple iPads and other electronics from a Target store in Valley Stream, Nassau County police said.

The scheme fell apart, police said, when a loss prevention employee at the Sunrise Highway store became concerned about the purchase, which was in excess of $6,000, and notified the authorities.

The incident took place at about 5:45 p.m. Tuesday.

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Police said Fourth Precinct officers, along with Crimes Against Property Squad detectives, arrested the four men at the scene. Arrested were: Oshane Anderson, 20, of 388 E. 18th St.; Clifford Dominique, 22, of 711 E. 92nd St.; and Mamadou Diallo, 21, and Kevin Blake, 21, both of 415 E. 17th St. Each was charged with third-degree grand larceny and second-degree possession of a forged instrument.

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