SugarHouse Casino is renewing its effort to scuttle plans for a second casino in Philadelphia.
The Pennsylvania Gaming Control Board is considering four applications for the city's second casino license.
SugarHouse says the region's gambling market is already saturated, citing a decline in slots revenue in Pennsylvania and the industry's "implosion" in nearby Atlantic City, New Jersey, where four casinos have closed this year.
The casino says gambling regulators have a duty to consider the impact a second casino would have on the market.
SugarHouse is petitioning the board to take additional testimony and evidence before making a decision to award the license.
The board held hearings on the license in January.
A board spokesman did not immediate respond to a request for comment Friday.
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SugarHouse opened in September 2010.