(KNZA)--The Prairie Band Potawatomi Nation has filed a federal lawsuit against the Kansas Lottery, accusing the state agency of violating tribal sovereignty by selling lottery tickets and operating lottery machines within the Nation’s reservation boundaries.

According to a release from the tribe, the lawsuit was filed in U.S. District Court in Kansas and claims the lottery continued operations at about two dozen locations on the reservation despite written notices and discussions with state officials.

Prairie Band Potawatomi Nation Chairman Joseph “Zeke” Rupnick says the tribe expects Kansas and local governments to recognize treaty-established reservation boundaries and respect the Nation’s sovereignty.

The lawsuit argues that the state’s lottery operations violate the federal Indian Gaming Regulatory Act and interfere with the tribe’s authority to regulate gaming on its lands.

The Nation is also asking the court to affirm that its 900-square-mile reservation, established through an 1846 treaty, remains intact under federal law.

Tribal officials say they are seeking to stop Kansas Lottery operations on the reservation unless the activities comply with federal law and protections for tribal sovereignty.