"Attention Wal-Mart Customers: All Black People Leave the Store Now"

WASHINGTON TOWNSHIP, N.J. (CBS/AP) Black shoppers in a Wal-Mart in southern New Jersey were asked a favor from a male voice on an intercom Sunday night.

"Attention Wal-Mart customers: All black people leave the store now," the voice calmly announced to the entire store.

Officials of Wal-Mart Stores, Inc. are reviewing security tapes trying to determine who used the store's public-address system to make the offensive announcement.

Company spokeswoman Ashley Hardie says the incident was "unacceptable."

Witnesses told the Courier-Post newspaper that customers and store employees looked stunned. Management later apologized.

Washington Township police and the Gloucester County Prosecutor's Office also are investigating.