A woman was killed in a rollover Tuesday on Arivaca Road, about 35 miles south of Tucson.

Deputies with the Pima County Sheriff’s Department were dispatched to the crash at about 4 p.m. between mileposts 16 and 17, authorities said.

Johnna Coleson, 44, was thrown from the vehicle and was pronounced dead at the scene by Elephant Head Fire Department officials, sheriff’s authorities said.

Coleson, who was the only one in the vehicle, was not wearing a seat belt, they said.

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