UPDATE: MAY 13
A search operation found Melissa Mendez deceased around 9am on Tuesday, May 13, according to PCSD.
PCSD says they identified no signs of foul play, but the investigation remains ongoing.
The search operation was launched after family members of Mendez contacted deputies after seeing video footage circulating online.
In the initial investigation, deputies did not find anyone located near the scene.
They learned the vehicle was being driven by the son of its registered owner.
He was driven by a UTV away from the crash site, according to a press release from PCSD.
Tucson Police and the Arizona Department of Public Safety (AZDPS) assisted in the investigation.
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ORIGINAL STORY
According to PCSD, there was a second person in the car with whom the detectives are speaking.
The name of the person is not being released, PCSD said.
Detectives are getting a better timeline for the crash.
PCSD said they believe Mendez was last seen Saturday/Sunday, but they are working to get a more specific timeline.
As of Monday evening, PCSD says it is looking to speak with a UTV driver who they say is believed to have assisted another driver in the area by providing a ride to the Dollar General Store in Redrock, Ariz.
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The Pima County Sheriff's Department is searching for a missing 22-year-old woman.
PCSD says Melissa Mendez, 22, was last seen wearing all black, in the area of 24209 W. Silverbell Road, west of Marana in Avra Valley, adding that she is believed to be involved in a single car crash in that area and left the desert area on foot.
According to PCSD, Mendez is 5'07" with brown hair and eyes.
If you have any information, PCSD encourages you to call 911 or 520-351-4900.