Brian Brewer's administrative assistant says the cause of the Saturday night wreck is so far unknown. Angie Sam says Brewer is still "pretty heavily medicated."
The Rapid City Journal reports that Brewer suffered cuts to his head and a broken hip, but Sam tells the newspaper it was a clean break and the president is expected to make a fast recovery.
Brewer is being treated at the Rapid City Regional Hospital. The wreck was near Red Shirt Table.
Sam says the injuries won't sideline Brewer's ability to fulfill his presidential duties for the tribe, though some meetings will need to be rescheduled.