The casino is located in Green Bay, Wisconsin.
The shooting took place at the main casino, located in Green Bay, near Austin Straubel Airport. Authorities have not yet provided up-to-date information on all injuries.
Wisconsin Attorney General Josh Cole said on Twitter that the situation is limited and there is no longer a threat to the community.
Oneida said several law enforcement agencies were on the scene.
Oneida Nation officials said all casino locations would be closed until further notice.
This is an evolving story. Check again for updates.