CHICAGO (STMW) — An SUV with a woman and two children inside crashed into a car, then drove into a retention pond early Wednesday in west suburban Aurora.

The 31-year-old Aurora woman was driving a 2003 GMC Envoy out of the parking lot of an industrial business at 1700 N. Edgelawn Dr. just before 5 a.m. when the SUV collided with a Scion waiting to turn into the same lot, according to a statement from city spokesman Dan Ferrelli.

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The Envoy continued eastbound after the crash and ended up submerged in a retention pond about 50 yards off shore, Ferrelli said.

A police officer who was first at the scene spotted a little girl—the woman’s 7-year-old daughter—trying to stay afloat and swam to the SUV, Ferrelli said. He pulled the girl to shore along with another officer and a witness. She is being treated at an Aurora hospital for injuries that are not thought to be life-threatening.

The Aurora Fire Department Dive Team arrived at the scene and pulled a 9-year-old boy out of the vehicle at 5:27 a.m., and the driver out at 5:40 a.m., Ferrelli said.

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Both the woman and her son were in critical condition at suburban hospitals, Ferrelli said.

The driver of the Scion, a 35-year-old Aurora man, suffered non-life-threatening injuries and was also taken to an Aurora hospital.

The SUV was towed from the water about 6:15 a.m.

The cause of the crash is not yet known, Ferrelli said. Anyone with information or who witnessed the crash should call Aurora police at (630) 256-5330.

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(Source: Sun-Times Media Wire © Chicago Sun-Times 2015. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)