TULSA, Okla. (AP) — The Inter-Tribal Council of the Five Civilized Tribes is holding a two-day meeting in Tulsa.

The Muscogee Creek Nation is hosting the Thursday and Friday sessions that includes the Cherokee, Choctaw, Chickasaw and Seminole Nations. Muscogee Creek Nation Principal Chief George Tiger says he's also invited other tribes to attend and that about 400 people are expected.

The quarterly meetings are held to allow tribal officials to discuss ways they can cooperate on issues facing the tribes and to collaborate on projects.