A plan to include Mississippi casino operators in a tourism tax incentive program has been approved by the Senate. The measure sparked fiery debate Wednesday in the chamber before it was passed.

Lawmakers in 2000 enacted the tax incentive program. It allows companies to recoup up to 30 percent of their costs for attractions through sales tax generated by the project.

Casinos weren't included in the 2000 legislation, but lawmakers are now trying to add them. Under the bill, a company can receive the incentive if it makes at least a $10 million investment for projects such as theme parks and museums. A more substantial investment would be required for other projects, including hotels.

Mississippi Gaming Commission rules already require new casinos to invest in land-based projects of equal value as their gambling houses. There's currently no tax break for casinos in state law.

Supporters say the legislation will encourage the development of tourist attractions in the state.

Mississippi has 29 casinos currently operating in the state. Supporters said the incentive program would benefit all areas of the state as a company can choose to build a tourist attraction anywhere.

The bill is likely to go to final House-Senate negotiations.