BOSTON (AP) — Massachusetts risks losing hundreds of millions of dollars in gambling revenue if the state’s gambling commission votes to open up the southeastern region to commercial casino developers, the Mashpee Wampanoag tribe warns.

The Mashpee, which has proposed a resort casino in Taunton, issued a statement and launched radio and TV ads in advance of a scheduled meeting on Thursday at which the commission will consider a plan to invite commercial bids for the sole state license in the region that until now has been carved out for a federally-recognized Indian tribe.