Updated at 1:30 p.m. Oct. 1: Revised to reflect a conviction in the case.

A Dallas County jury convicted Amber Guyger, the former police officer who fatally shot Botham Jean, of murder.

Testimony stretched over six days as jurors heard from officers who were called to the scene that night and watched them perform CPR on Jean, frantically trying to save his life.

The jury has listened to testimony from neighbors and an investigator about how common it was for residents to wind up on the wrong floor of the South Side Flats where Guyger and Jean lived.

They've heard the 911 call Guyger made after she shot Jean, and they heard from the former officer herself.

Here are five key moments in the trial since it began Sept. 23.

Amber Guyger sobbed on the stand Friday while recounting the night of Sept. 6, 2018, when she killed Botham Jean in his apartment. (Tom Fox / Staff Photographer)

Guyger takes the stand

Guyger, 31, was the first witness called to the stand after the state rested its case and her defense team took over.

She testified that she would forever regret the night she shot Jean. She said she entered his apartment thinking it was her own and killed him believing he was a burglar. She was off-duty but still in uniform when she killed Jean, which her defense has called a "tragic, but innocent" mistake.

A photo of Botham Jean leans against Judge Tammy Kemp's bench. (Tom Fox / Staff Photographer)

But the prosecution said the fired officer had other options before she confronted Jean and cared more about herself than Jean after she shot him.

Guyger sobbed as she took the stand Friday, telling jurors she shot Jean because she was afraid.

"I was scared whoever was inside of my apartment was going to kill me, and I'm sorry," Guyger said through tears, her voice shaking. "I have to live with that every single day."

One of her attorneys asked what went through her head after the shooting.

"That I shot an innocent man. He didn't deserve — I didn't — I thought I was in my apartment," she said.

She said being alone with a man she had just shot, before other officers arrived at the scene that night, was the "scariest thing" she could imagine.

Lead prosecutor Jason Hermus pounced on that part of her testimony.

"That's the scariest thing you can imagine, right?" Hermus asked.

"Yes, sir," Guyger said.

"Can you imagine Mr. Jean's perspective? An intruder barging into his apartment," Hermus said. "And then having been shot and fallen and being alone in that apartment — can't you imagine that being a little bit scarier than you just being alone at the moment?"

"Yes, sir," she said.

Guyger testified that she had heard "shuffling" inside the apartment before she opened the door that night. Hermus said she could have stayed in the hall and called for backup on her radio. She could've had "the cavalry" there in minutes, he said.

"For your safety, you should have taken a position of cover and concealment and got help," Hermus said, "and instead you decided to go in."

"Yes, I did go in," she said.

Dallas police Officer Michael Lee watches footage from his body camera on the night he and other officers tried to save Botham Jean's life. (Tom Fox / Staff Photographer)

Videos show officers' frantic attempts to save Jean

On the second day of Guyger's trial, jurors saw body-camera footage from the night of Sept. 6, 2018, as officers scrambled up stairs and down hallways, rushing toward the apartment where Jean lay dying.

The footage showed first responders desperately take turns performing CPR as Jean lies bleeding on the floor, unconscious with only a faint pulse.

Guyger appears briefly in Officer Michael Lee's body-cam footage before he orders her to get away from Jean.

"I thought it was my apartment. I thought it was my apartment," she repeats as Lee moves past her, putting on a pair of blue gloves.

"Chief, hey, can you hear me?" one officer says to Jean, who was on the floor in light-colored shorts and a dark T-shirt. "Can you hear me?"

Jury watching body camera video from officer who responded to scene when Amber Guyger shot and killed Botham Jean. Not showing the graphic scene. Officers give CPR. Guyger in apartment when they arrive. ➡️ https://t.co/050hOCLe8R pic.twitter.com/VbuBSV7SqI — Larry Collins (@LarryNBC5) September 24, 2019

Jean's family left the courtroom that day before the video played. But when the judge asked to replay it Wednesday, sending the jury out of the room, Jeans' parents were still there.

Judge Tammy Kemp didn't realize Bertrum and Allison Jean were still in the courtroom as the video played, showing Jean dying on his apartment floor. She quickly apologized.

Texas Ranger David Armstrong (center) listens as body camera footage plays in the courtroom during the murder trial of Amber Guyger. (Tom Fox / Staff Photographer)

Residents and Ranger testify about confusing floor plan

Guyger wasn't the only South Side Flats resident to go to the wrong apartment or floor. Her attorneys have tried to show it's a common occurrence at the apartments just south of downtown Dallas — particularly for residents on the third and fourth floors, where Guyger and Jean lived.

Ranger David Armstrong, the lead investigator on the case, testified that even he had trouble knowing which floor he was on while investigating the shooting last year.

"There were no clear obvious signs showing what level you were on," he testified earlier in the week when questioned by Robert Rogers, one of Guyger's attorneys.

Armstrong told the jury that he led a team that interviewed 297 of the 349 residents at the South Side Flats, and 46 of them had walked to the wrong floor and put their key in the door. Of those residents, 38 of them were from the third and fourth floors.

Some residents testified in court that they've gone to the wrong apartment. Marc Lipscomb told the jury Friday about a time he entered the wrong apartment after taking his dog for a walk. He didn't realize the apartment wasn't his until he saw a woman sitting on a couch in her living room.

"She kind of looked like a deer caught in the headlights. She didn't say anything, she was silent, but she looked scared," Lipscomb said. "I was like, 'Oh, my God, I'm so sorry. I'm in the wrong apartment.' It was an embarrassing moment."

Prosecutors noted throughout the week that no matter how many residents went to the wrong floor or apartment, Guyger's experience was the lone instance in which someone was shot.

Dallas Officer Martin Rivera grimaces as prosecutor Jason Hermus shows him explicit texts and Snapchat messages between him and his police partner Amber Guyger. (Tom Fox / Staff Photographer)

Guyger's explicit text exchange with her police partner

Much of the first day of testimony focused on Guyger's affair with her married police partner, Officer Martin Rivera.

Prosecutors contend that the night of the shooting Guyger wasn't tired but distracted by possible plans they said she had later that evening to meet up with Rivera.

Guyger and Rivera worked as partners for the Dallas Police Department and over time had developed a sexual relationship. Both testified that the physical relationship ended late in 2017 or early 2018, but they still sent flirtatious and sexual text messages to each other, including throughout the day Guyger shot Jean.

About 30 minutes before the shooting, Guyger sent Rivera a Snapchat message that said, "Wanna touch?"

Rivera and Guyger were on the phone for 16 minutes as she drove home from work — a call that ended a few minutes before she shot Jean.

During her defense team's opening statements, attorney Robert Rogers portrayed the prosecution's sharing the texts as a "distraction."

Guyger and Rivera both testified that there were no plans to meet later that night, and that the text exchanges were just flirtatious. Guyger also said Rivera had never been to her apartment.

Amber Guyger visits with defense attorneys after taking the stand in her murder trial Friday. (Tom Fox / Staff Photographer)

Witnesses can't tell jury they think Guyger acted reasonably

One of the most surprising moments of the trial was when Armstrong testified that he didn't believe Guyger committed a crime.

"After finishing your investigation and looking at the totality of the circumstances and considering everything, do you believe today that you have probable cause to believe that Amber Guyger committed a crime?" Rogers asked.

"Based on the totality of the circumstances, based on the complete investigation, no, sir," Armstrong said.

But the jury never heard his opinion. Kemp didn't allow him to testify before the jury.

Retired Deputy Chief Craig Miller answers questions Saturday from lead prosecutor Jason Hermus in the 204th District Court at the Frank Crowley Courts Building in Dallas. (Tom Fox / Staff Photographer)

Kemp didn't allow Armstrong or former Dallas police deputy chief Craig Miller to share with the jury their opinion that Guyger was "reasonable" when she believed Jean was an intruder and that her life was in danger.

"It's my opinion that in this case Ms. Guyger, thinking she was in her own apartment, fired a shot at a person that she felt was a threat to her, and that was reasonable," Miller said.

But the U.S. Supreme Court has ruled that there is no definition of "reasonable." It's left up to each juror.

Read more about Botham Jean and Amber Guyger.

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