The case drew national attention after a bystander's video of the shooting became public, fueling fresh concerns about how minorities are treated by police in the United States.
Judy Scott on Thursday turned toward Michael Slager and said her faith in God gives her the ability to forgive him for killing her son, Walter Scott. That plea put Slager's fate in the hands of U.S. District Judge David Norton, who was tasked with determining whether the ex-cop was guilty of manslaughter or murder - and what sentence he should serve for either offense. "I would like you to sentence the defendant to the strongest sentence the laws allows because he murdered my one and only father".
Retired North Charleston officer Wade Humphries, a former indirect supervisor of Michael Slager, called Slager his "go-to" man in the department and said that Slager was following his training when shooting at the suspect "until the threat cease [d]".
The sentencing hearing reconvenes Tuesday morning and could last several days.
State prosecutors had tried Slager for murder last fall, but the judge declared a mistrial after a mostly white jury failed to reach a unanimous verdict-either on the charge of murder or a lesser manslaughter charge.
On April 4, 2015, Slager stopped the vehicle Scott was driving in North Charleston for a broken rear brake light.
Walter Scott's son, Miles Scott, encouraged Norton to put Slager behind bars for life. But there were no complaints from the Scotts about the findings from the judge, who also determined that Slager had made false and misleading statements.
The day began with a cross-examination of defense witness and forensic psychiatrist Dr. Charles Morgan.
This week, federal prosecutors and Slager's lawyers have called witnesses to testify about technical aspects of the case, including what happened to Slager's stun gun before the shooting. Slager's attorneys think the videos show him acting in a calm, professional demeanor leading up to the fatal shooting of Walter Scott.
Slager's state trial ended when a panel of 11 white jurors and one black juror deadlocked past year after deliberations over four days.
During his exam, Slager told the doctor he remembered having a "scuffle" with Scott but otherwise didn't recall specific details from any fight the men had.
At this week's hearing, attorneys for Slager and the state called expert witnesses to the stand to bolster rival interpretations of the video and audio, which included some dash-cam footage from Slager's auto.
Slager's attorney, Andy Savage of Charleston, introduced evidence during the hearing to contend that Scott had resisted arrest and posed a threat to the officer in the seconds before the shooting. Prosecutors believe the videos depict the officer's callous behavior. After deploying his stun gun, Slager fired eight bullets at Scott as he ran away, hitting him five times in the back.
Scott's mother, Judy Scott, said she was on the phone with her when he was pulled over and told him to comply with the officer's demands "so there wouldn't be any trouble".