Denver police are investigating a death in the Central Business District on Monday morning as a possible suicide.

Glenarm Place at 16th Street was closed as police investigated the death. Police said the person who died appears to be a woman, though identification will come from the Office of the Medical Examiner.

The area is near the 16th Street Mall.

At about 8 a.m., the department tweeted it was responding to a “person in crisis” in the area and advised using alternate routes. The department updated that initial message at about 9 a.m. to say the incident was now a death investigation, and asked people to avoid the area. A department spokesperson said it was unclear how long the street would be closed.

This is a developing story and will be updated.