St. Louis police have identified the officer killed in an accidental early morning shooting as 24-year-old Katlyn Alix.

The shooting happened around 1 a.m. Thursday when two on-duty male officers went to one of their homes during their shift. Police Chief John Hayden says Alix was off-duty and stopped by the home. It wasn't clear why the officers were at the home.

A police incident report says the officers were seated in the apartment living room when one of the male officers "mishandled a firearm and shot (Alix) in the chest."

The male officers took her to a hospital, where she died.

Police and the St. Louis city circuit attorney's office are investigating.

Hayden, in a statement, says Alix was an "enthusiastic and energetic young woman with a bright future ahead of her." Survivors include her husband, parents and a sister.