Amber Guyger, the Dallas police officer who killed Harding University graduate Botham Jean in his own apartment Sept. 6, has been fired.

A news release said she was fired after an internal affairs investigation found she had engaged in “adverse conduct” when she was charged with manslaughter. Critics had complained that Guyger should have been fired days ago. She has said she thought she was in her own apartment in the same complex when she encountered Jean and thought he was a burglar.