Detectives are investigating an overnight accident that left one woman dead. That accident happened just before 11 on Interstate 37 and Port avenue.

Detectives say the woman --who has not been identified-- fell from an overpass when she was struck by a passing vehicle.

The family inside the vehicle have been transported to a nearby hospital with non-life threatening injuries. The victim was pronounced dead at the scene.

Investigators are still working to determine what caused the woman to fall.

This is a developing story. Stay with 3 News for the latest.