UPDATE (2:53 p.m.)
According to the Arizona Department of Public Safety, a Ford Fiesta was traveling westbound at just before 9 a.m., when, for an unknown reason, it crossed the median and struck an eastbound Chevrolet van.
The driver of the Fiesta, a woman in her 20s, died at the scene, DPS said.
The driver of the van sustained serious injuries and was transported to a Tucson hospital, the news release said.
UPDATE (11:55 a.m.)
The eastbound lanes of Interstate 10 have reopened at Rita Road in Tucson, according to the Arizona Department of Transportation.
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Interstate 10 eastbound is closed at the Rita Road exit due to a crash.
There is no estimated time to reopen, according to the Arizona Department of Transportation.
Drivers are advised to find an alternate route.
