The Isle of Capri Casino Hotel Waterloo has joined the Riverside Casino and Golf Resort in contributing to Just Say No Casino in an effort to defeat the March 5 referendum in Linn County on casino gaming.

On Monday, the Iowa Racing & Gaming Commission made public a document that shows that the Waterloo casino has informed the commission that it has signed a contract with Just Say No Casino to provide up to $150,000 to the anti-casino group’s campaign in Linn County.

This report follows one released by the state commission on Friday that showed that the Riverside casino has reported that it had signed a contract with Just Say No Casino and intended to spend up to $1.5 million to defeat the Linn County casino ballot measure.

The Gazette had sought the documents from the state commission.

Steve Gray, a leading investor in the Cedar Rapids casino proposal, on Monday said he wouldn’t be surprised if the Meskwaki Bingo Casino Hotel also might be contributing funds to beat back a Cedar Rapids casino.

State-licensed casinos like in Riverside and Waterloo must report expenditures of more than $100,000 to the state commission, though the Meskwaki casino, which is an Indian casino and does not need a state license, has no such reporting requirements.

The Waterloo and Riverside casinos, which opened in 2007 and 2006 respectively, are funding the anti-casino campaign in Linn County because they believe their business will be harmed if a Cedar Rapids casino is built.