BLYTHE, Calif. - Update 5/20/17: According to her grandson, police found Curwick's body inside of her car, five miles outside of Blythe Friday afternoon.
KABC says the grandson, Kris Greening, told them her body was found 5:30 p.m. Friday afternoon.
The cause of her death is not yet known.
Sheriff's deputies sought the public's help today to find a missing 83-year-old Rancho Cucamonga woman last seen at a Blythe gas station and possibly heading to Palm Springs.
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Mary Curwick last spoke with her family May 12 and was reported missing four days later after her neighbor contacted San Bernardino sheriff's deputies. The neighbor told deputies Curwick's front door was left open and he had not seen her for a couple of days, according to Detective Kirsten Mitchell.
Curwick is described as white, 5-foot-2, weighing 150 pounds, with hazel eyes and short gray hair. A search of her apartment turned up several medication bottles for high blood pressure, diabetes and seizures, Mitchell said.
Curwick is believed to be driving her 2014 black Ford Fiesta with a California license plate of 7DHH239. The Ford has moderate front passenger fender damage, deputies said. Initially, law enforcement officials said the car was last seen in the area of West Ninth Street in San Pedro on the night of May 13, but followed up on credit card information that revealed her card was used at Mesa Drive Fuels in Blythe on May 14. The card was declined, deputies said.
Surveillance footage from the gas station showed that Curwick used her card at the station, but was having trouble swiping it. A gas station attendant gave her $15 worth of fuel. The attendant also told a deputy that Curwick appeared coherent and said she was on her way to Palm Springs.
Anyone with information regarding her whereabouts was asked to call the Rancho Cucamonga sheriff's station at the Silver Alert hotline at (866) 346-7632.