After her shift ended Thursday night, September 6, the officer mistakenly entered the wrong apartment, Dallas Police Chief Renee Hall told reporters Friday afternoon.
Update: A manslaughter warrant has been issued for the unnamed female officer who killed Botham Jean in his apartment after she mistook his apartment for her own.
Police haven't released the name or race of the officer, who had arrived home in-uniform and who wasn't injured.
An off-duty Dallas police officer had just returned to what she thought was her apartment when she saw a man she didn't recognize, KDFW reports.
The victim, identified as 26-year-old Botham Shem Jean, was taken to Baylor University Medical Center and later pronounced dead.
People who live nearby said they got a notification about the shooting on the app Nextdoor. The officer who shot him was not physically hurt, according to police.
"Super scary because the police are supposed to protect you and then they come home and, you know, you're just hanging out in your house..." The officer, who has not yet been publicly identified, has been placed on administrative leave, authorities said.
According to Jean's Facebook page, he was a native of Saint Lucia who graduated from Harding University in Arkansas. A blood sample was drawn to test the officer for drugs or alcohol. "We have ceased handling it under our normal protocol as an officer-involved shooting". The man later died from his wounds at an area hospital. "Open up!'" 20-year-old Caitlin Simpson told The Dallas Morning News.
"We heard cops yelling, but otherwise had no idea what was going on", Simpson's study partner, Yazmine Hernandez, 20, said. The company in a statement said "we are simply heartbroken to hear of his death".
The Dallas Police Department and the District Attorney's Office are conducting a joint investigation.
Hall is not certain where the officer is at this time.
"At some point, she pulled her weapon and shot the victim", he told reporters earlier in the day. "He's a bachelor. Things are different inside and if you try your key and it doesn't work, that should make you realize you're at the wrong apartment".
"Now I have to go pick out your casket", she wrote.