ST. LOUIS – Police are investigating after finding a woman unresponsive Tuesday morning in a St. Louis alley.

The woman was located in the 4000 block of Sullivan Avenue in the Greater Ville neighborhood at an undisclosed time after police responded to a call for assistance in the area.

The woman was rushed to a local hospital, where she was later pronounced deceased. Police have called the situation a “supposed sudden death.”

Although homicide detectives responded to the situation, it’s unclear what led up to the woman’s death. An autopsy is pending.

The St. Louis Metropolitan Police Department has not yet released any other details in the investigation. FOX 2 will update as more information becomes available.