TOPEKA, Kan. (AP) — The Kansas Lottery Commission is giving Las Vegas billionaire Phil Ruffin more time to provide information about a proposed southeast Kansas casino.

The Joplin Globe reports that the commission raised questions Wednesday about whether Ruffin is making the minimum investment required for a state-owned casino. The commission has put off making a decision on which of three proposals to back until April 24.

Ruffin’s proposal calls for a $78.5 million project at the former Camptown Greyhound Park in Frontenac. Questions have arisen about the value of the racetrack and land.

The commission also heard proposals for Castle Rock Casino Resort, a $140 million casino that would be built in Cherokee County. The third proposal is a $62 million facility, Kansas Crossing Casino, which would be built south of Pittsburg.