A woman died and her 3-year-old grandson was airlifted to a Tucson hospital with "life-threatening" injuries Wednesday after a one-vehicle rollover on Arivaca Road.
The grandmother, Sandra Cornell, of Arivaca, died at the scene. She was ejected from the 1996 Chevrolet Trail Blazer she was driving, said Sheriff Antonio Estrada. A 56-year-old passenger did not require medical attention, he added.
The crash was reported to local law enforcement by the Pima County Sheriff's Office, but occurred on the Santa Cruz side of the county line near milepost 16.5 on the winding road that leads from Interstate 19 to Arivaca.
The cause of the crash was still under investigation, Estrada said. "We're looking into such things as driver inattention, alcohol, speed, a blow tire, or other factors."
Estrada said it was the second fatal vehicle accident this year on county roads. The other was in Sonoita.
"I think we're fortunate (the amount of accidents isn't higher) because most of our county roads are narrow, winding and many are dirt roads," he said.
The Santa Cruz County section of Interstate 19 has been the scene of three fatal accidents in 2011, and was the site of four deadly accidents in 2010.
"Most of the fatalities are occurring on the wide-paved interstate. Of course the speeds are higher," Estrada conceded.