The Georgia Department of Revenue has raided Gladys Knight’s Chicken and Waffles.

Gladys Knight’s son, who runs the operation, is at the center of an investigation involving $1 million, according to Channel 2 Action News. Gladys Knight is not involved in the investigation.

All three Gladys Knight’s Chicken and Waffles locations in metro Atlanta have been closed, Channel 2 reported. The restaurants could reopen as soon as Thursday, possibly under state control, the station reported.

Atlanta police assisted in the raid, according to Channel 2.

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