*Officials at a southern New Jersey Wal-Mart store are reviewing security tapes to try to track down the person who used the public-address system to tell “all black people” to leave.

Shortly before 7 p.m. Sunday at the Washington Township store, a male voice calmly announced: “Attention Wal-Mart customers: All black people leave the store now.”

Witnesses say customers and store employees looked stunned, according to the Associated Press. Management later apologized.

Company rep Ashley Hardie says the incident was “unacceptable,” and the retailer is looking to prevent it from happening in the future.

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