Amber Guyger, the Dallas police officer who reportedly shot and killed 26-year-old Botham Jean in his own apartment on Thursday night, turned herself in to Dallas Police on Sunday evening.

Dallas Police identified the off-duty, uniformed police officer who shot and killed a black man in his own apartment as Amber Guyger, a four-year veteran of the Dallas Police Department. Guyger claims that she mistook Botham Jean’s South Side Flats unit for her own.

A video that captured an encounter between a Houston-area college student and a constable has now gone viral and has resulted in an internal-affairs complaint being filed against the deputy, alleging harassment, constitutional violations, excessive force and abuse of power.

Sgt. James Young—the Balch Springs, Texas, police officer responsible for training Roy Oliver, the officer who killed 15-year-old Jordan Edward—has been identified as the officer in newly released dashcam footage tasing Marco Stephenson, a black man handcuffed with his hands behind his back.