A two-vehicle serious injury crash Monday night closed the intersection at North Oracle and West River roads.
One person suffered serious injuries, and another suffered minor injuries, said Sgt. Kimberly Bay, a Tucson Police Department spokeswoman.
The intersection is closed in all four directions. It was unknown how long the intersection would remain closed, authorities said.
Motorists are advised to use an alternative route.
No further information was immediately available.
