DENVER (CBS4) — A woman who had been shot was found in a car on Interstate 70 near Colorado Boulevard early Monday morning.

Denver police say the call came in around 4:30 a.m. A person working in the area told dispatch he heard a popping noise and saw a car pulled over near the exit ramp.

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Officers arrived to check it out and found the injured woman. She was taken to the hospital and is now in serious but stable condition.

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Two lanes of westbound I-70 were closed during the investigation but have reopened.

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Investigators are working to find out what led to the shooting. If you have any information you’re urged to call police or, to remain anonymous, call Crime Stoppers at 720-913-7867.