Gold Rush Amusements has filed a lawsuit in Cook County claiming “illegal and tortious conduct” by Accel Entertainment, adding another chapter in the ongoing dispute between two of the three largest operators of video gaming terminals (VGTs) in Illinois.

The two sides have been at odds since last July, when Accel attempted to convert two loans totaling $30 million it made to Gold Rush in 2019 into debt equity. Illinois Gaming Board Administrator Marcus Fruchter rejected the initial request by Accel in December, and his decision was unanimously upheld by the board in February.

Underappreciated as a form of state tax revenue in Illinois, VGTs have generated more than $381.6 million in taxes through the first five months of the year, with the state’s share coming to $325.5 million.