The Horizon Casino, the only gaming house in downtown Vicksburg, has cut back its operations and let some employees go.
The Vicksburg Post reports the casino, located on a riverboat at the City Front, has shut down two floors and all table games, such as blackjack and craps.
The owner, Tropicana Entertainment, referred questions to Mayor Paul Winfield. Winfield's office said layoffs were confirmed by the company but only as "in excess of 20 but less than 100."
Tropicana also owns Lighthouse Casino in Greenville and properties in Las Vegas and Atlantic City.
The casino opened as Harrah's in 1993 as the state's first casino-hotel combination and as Vicksburg's second casino. Four other casinos operate in Vicksburg.