Amber Guyger has been identified as the Dallas cop who gunned down Botham Shem Jean in his apartment Thursday night after she reportedly went to the wrong apartment.

Guyger had just finished a shift when she reportedly went to the wrong apartment and fatally shot Jean. WFAA reports that Jean and Guyger didn’t know each other.

Charges are expected in Jean’s shooting death but the Dallas Police Department has turned over the case to the Texas Rangers. Investigators have drawn blood to determine if alcohol or drugs was in her system at the time of the shooting.

Botham Jean, who is from St. Lucia, worked for PricewaterhouseCoopers. He graduated from Harding University in Arkansas. Amber Guyger worked for Dallas Police Department for four years in the Southeast Patrol Division.