North Carolina’s casino wars heated up as two Native American tribes celebrated major gambling site expansions on the same day.

The Eastern Band of Cherokee Indians on Friday opened a $330 million expansion of the tribe’s Harrah’s Cherokee Casino Resort. The expansion includes a 19-story, 725-room hotel tower and a convention center.

And the Rock Hill-based Catawba Indians announced a planned doubling of the number of gaming machines to 1,000 at their gambling site off Interstate 85 in Kings Mountain. The casino is about 35 miles west of Charlotte.The 24/7 facility that opened in July is the first phase of the planned $273 million Two Kings Casino Resort.