Indiana is officially joining the ranks of states to legalize sports betting, and the state also announced this week that it would allow construction of two new casinos.

The Associated Press reports that Indiana Gov. Eric Holcomb signed the bill on the final day he could act on the measure previously approved by lawmakers in the state. Sports betting in the Hoosier state could open as soon as September, and when this happens anyone 21 and older at a casino or on a mobile device will be able to place bets.

The NCAA football season kicks off on Aug. 24 this year, while the NFL regular season is set to start with the Packers and Bears on Sept. 5. The bill does not allow betting on any high school or youth sports in Indiana, according to A.P.

Related: U.S. Supreme Court makes legalized sports betting possible in each state

“Gaming is a highly regulated industry that once had little competition, but now does from surrounding states and new technology,” Holcomb said in a statement. "By modernizing our laws, this legislation will spur positive economic growth for our state and for an industry that employs over 11,000 Hoosiers.

“Additionally, it will bring in new revenue and create hundreds of new jobs -- both permanent and in construction. I will direct the Indiana Gaming Commission to monitor for potential effects of this bill so that we can make necessary changes in future legislative sessions.”

This measure comes on the heels of the NCAA -- based in Indianapolis, Indiana -- announcing it would erase its rule on keeping championship events out of states with legal sports betting.

A.P. reports that the proposal places a 9.5 percent tax on any sports bets, and that this measure is projected to generate $12 million annually.

As for these new casinos, the news organization reports that two horse track casinos near Indianapolis with table games and human dealers will be allowed to open in January 2020. This is in addition to the state allowing the owner of two Gary, Indiana casino boats to move to a new one along I-80-94 in Indianapolis.

Related: Michigan Senate votes to legalize online gambling

This also has set up the groundwork for a casino to open in Terre Haute, Indiana. As part of all of this, the company buying the two boat casinos must spend at least $150 million on a new casino in Gary, and pay the $20 million state fee to complete the process.

As of Wednesday, May 9, A.P. reports that Spectacle Entertainment -- the company behind these moves -- has proposed a $300 million new casino with a 200-room hotel in Gary. For more information on House Bill 1015 in Indiana, click here.