Officials in the eastern U.S. state of New Jersey are investigating an incident at a Wal-Mart in which a man used the store's public-address system to tell African-Americans to leave.
Customers were shocked Sunday when a male voice announced, "Attention Wal-Mart shoppers, all black people must leave the store now."
Wal-Mart officials say they are reviewing security tapes to determine who made the announcement.
The local prosecutor's office said it also is investigating.
Some information for this report was provided by AP.