A Fort Worth, Texas police officer resigned Monday morning after fatally shooting a 28-year old black woman through the window of her mother’s home this past weekend.

Police chief Ed Kraus said in a press conference that he had intended to fire Aaron Dean, the officer who shot Atatiana Jefferson early Saturday morning, but Dean resigned first.

The announcement came after a department review of body camera footage — portions of which were also released to the public — found that the officer did not announce himself as a police officer before firing.