They argued that she really believed that she was in her home and that Jean was an intruder. The judge is expected to provide guidance on sentencing law; she could be sentenced five to 99 years in prison under Texas law.
Guyger, a four-year veteran of the Dallas Police Department, initially was charged with manslaughter.
The jury light came on again about 10 a.m., indicating jurors have another question or note, but no one has yet announced what that was.
"It may have been a stretch for Judge Kemp to allow that jury to consider it", Tim Powers, former Texas prosecutor and judge, told NPR. Guyger's defense team labeled the shooting the culmination of "a series of disgusting mistakes".
Shortly after they began deliberating, one of the Jean family attorneys, civil rights lawyer Lee Merritt, told reporters that the ruling would have far-reaching consequences.
"I was scared whoever was inside my apartment was going to kill me", she told the jury. She then saw the silhouette of a figure and pulled out her gun and yelled, "Let me see your hands!"
Former Dallas police officer, Amber Guyger is now a convicted murderer.
After the shooting, many said the incident represented another case of a white officer shooting an unarmed black man.
WFAA reported on live TV that there were tears of joy for Jean's family and tears of agony for Guyger, who was taken from the courtroom in handcuffs. He was also a recent college graduate who studied accounting and was known for his leadership on campus and his lovely singing voice in his Christian Church.
What perhaps stood out in the trial was Guyger's hours-long testimony on Friday where she broke down twice when talking about the case.
Guyger's defense attorney Toby Shook said the law protects people in certain circumstances who make mistakes based on incorrect assumptions and that the state must rule out every possible reasonable doubt, or the jury must hand down a not guilty verdict.
"I shot an innocent man", she said during her testimony, the first time the public had heard from her since the shooting. In September 2018, Guyger walked up to Jean's apartment - which was on the fourth floor, directly above hers on the third - and found the door unlocked. Prosecutors suggested he was just rising from a couch toward the back of the room when the officer shot him.
"Hey, hey, hey", she said the person shouted, and she fired. "Hey!" according to NBC.
After hearing the verdict, Guyger stood as the jury filed out of the courtroom and then sank into her chair.
Guyger and Jean lived the same apartment complex but on different floors.
Guyger had her police radio on her, and she lives just two blocks away from police headquarters, so she could have had other officers arrive quickly, prosecutors pointed out. Fine said. "This has to do with that defendant making unreasonable decisions that put her in that seat and Bo in the ground", Fine said as he pointed at the defendant.
Dallas County Assistant District attorney Jason Fine on Monday asked jurors to reject Guyger's "crazy" statement that she shot him in self-defense.
