The sister of former Supreme Court Justice Sandra Day OConnor was assassinated in road accidents Saturday in Arizona.

Pima County sheriffs spokesman Ryan Inglett said Ann Day, 77, abode fatal harms after her vehicle was struck by two other autoes near Tucson. Day was a former Arizona Republican state senator and Pima County supervisor.

Day was driving eastbound on Ina Road around 7:40 a.m. when an oncoming vehicle intersected the median. Daylights vehicle was impressed head-on, Inglett said. A truck traveling behind Day then rear-ended her. She was alone in the vehicle.

Paramedics brought Day to the hospital, where she was declared dead. The other two drivers, both male, were hospitalized with serious but non-life-threatening injuries. Inglett said the Pima County Office of the Medical Examiner will determine the official cause of death.

Pima County Sheriff Chris Nanos said the 23 -year-old driver of the car that touched Day head-on is suspected of impaired driving. Nanos said he was received driving erratically at excess speeds.

Meanwhile, condolences initiated to pour in from Arizona political figures.

“With Ann’s disastrous extinction, our country has lost a tireless exponent who dedicated their own lives to public service as a coach, nation senator and Pima County overseer, ” U.S. Sen. John McCain said in a statement. “Cindy and my devotions are with Ann’s family and loved ones, as well as the entire Arizona community, during this difficult time.”

Day was the younger sister of O’Connor. She was often described herself as a “cowgirl from the Lazy B, ” referring to the southeastern Arizona ranch her grandfather established.

She served in the Arizona Senate for a decade and as a Pima County overseer for 12 years, the Arizona Daily Star reported.

Day was known for being moderate politically and for preaching for cancer patients’ claims to clinical contests and reforms in the HMO industry.

The Associated Press contributed to this report .

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