Hartford (AP) — Connecticut's highest court has found that a limousine driver who rear-ended another car in 2011 can't be sued in state courts because he was driving for a Native American gaming authority at the time.

The Journal Inquirer reports the state Supreme Court ruled Monday that William Clarke is protected by sovereign immunity.

The legal doctrine applies to tribes as well as state and federal governments.

Clarke was driving patrons of the Mohegan Sun casino in a limousine belonging to the Mohegan Tribal Gaming Authority when he rear-ended another car on Interstate 95 in Norwalk. Brian Lewis and Michelle Lewis suffered multiple bone fractures.

The court found that Clark was acting within the scope of his employment at the time.

The lawyer representing the plaintiffs says they haven't discussed how to proceed.