The 86-year-old woman who drove her four-door Buick into a retention pond in south suburban Phoenix died Saturday.
Helen Wallace was pronounced dead shortly after 2 p.m. at Ingalls Memorial Hospital in Harvey, according to a spokesman with the Cook County Medical Examiner’s Office.
She'd been pulled from her car, submerged in about 10 feet of cold, murky water a day earlier.
An off-duty police sergeant began the rescue before emergency personnel from other departments arrived on the scene.
