According to a police officer via Dallas News Guyger is "devastated" and "she is so, so sorry for this family". It wasn't immediately clear if she had an attorney. The officer's apartment was directly below Jean's, he said.
At a news conference early Friday, Dallas police Sgt. Warren Mitchell said they had yet to interview the officer and would not speculate as to whether she mistakenly entered another apartment and believed the man already inside was an intruder.
Authorities have not said how Guyer got into Jean's home, or whether his door was open or unlocked.
Hall said police aren't handling the case under the department's usual officer-involved shooting protocol.
On Saturday, the Texas Rangers, which is now handling the investigation, chose to postpone pursuing a warrant against Guyger "until they could follow up on information that they received from the interview with the officer", the Dallas Police Department said.
Her blood has been drawn to be tested for drugs and alcohol, according to Police Chief Renee Hall. She has been charged with manslaughter.
Guyger was arrested three days after the incident after the Texas Rangers chose to postpone pursuing a warrant "until they could follow up on information that they received from the interview with the officer". The police department released her name yesterday, which was two nights after she shot and killed Mr Jean.
"We want to know why that person is not in handcuffs yet", Merritt said. "Botham Jean was a member of the PwC family in our Dallas office and we are simply heartbroken to hear of his death", the company said in a statement.
Jean was once asked to lead a college chapel service with an hymn that was unfamiliar to him, Harding University President Bruce McLarty recalled in a statement Friday.
The arrest warrant was issued after an independent investigation by the Texas Rangers and the Dallas County District Attorney's Office. Such questions are being raised by Jean's family and attorney.
"I have to believe based on experience that her decision to use deadly force in the way that she did was influenced by the fact that she was standing in front of a black male and that our society has allowed law enforcement to use deadly force in unnecessary situations against black men with impunity", he said. "Botham never saw color, never saw race. He wanted all of us to unite, to be together".
The Dallas West Church of Christ, where Jean reportedly worshiped and taught a young adult Bible study every Wednesday, shared a post about his death on Facebook with a short, somber message of its own.
Todd and Debbie Gentry drove to Dallas on Friday and picked up Botham Jean's mother at the airport.
While Johnson could not answer the question during their meeting, the new evidence brought forward included a witness and video footage in the aftermath of the shooting, according to Merritt.
After Perez had the Taser, Guyger fired her gun once, striking him in the abdomen, the affidavit said.
"Super scary because the police are supposed to protect you and then they come home and you're just hanging out in your own house and then they come home thinking they're home or whatever", he said.