A man who intentionally and fatally ran down an Eagan couple out for their evening walk last year has been sentenced to more than 47 years in prison.
Dakota County District Judge Shawn Moynihan on Friday sentenced Jonna Kojo Armartey, 38, formerly of Eagan, to 567 months in prison for killing Roger Peterson, 74, and Diane Peterson, 58, in an Eagan parking lot on June 28, 2018.
Armartey had pleaded guilty to two counts of second-degree murder in August 2018.

Armartey and the Petersons did not know each other.
While handing down the sentence, Moynihan told Armartey that after he deliberately struck the Petersons with his minivan he “left them lying in the parking lot with broken bodies, gasping for breath” and then “raced off and left them to die.”
“The Petersons were doing nothing wrong that night,” Moynihan said. “They were only at the wrong place at the wrong time. They did not deserve to die.”
Since the double fatal hit-and-run, Armartey has been committed as mentally ill and dangerous and has been at the Minnesota Security Hospital in St. Peter.
At Friday’s hearing, Armartey’s public defender, Catherine Turner, asked Moynihan to allow her client to remain at the hospital, calling him “a very sick man.”
“His sickness is why we are here today,” she said.
After sentencing Armartey to prison, Moynihan told him that while there he will have access to mental health programming, medications, counseling “or whatever else you may require.”
HE SPED AWAY AFTER HITTING COUPLE
According to investigators, Armartey was driving his minivan through Eagan around 10 p.m. when he spotted the Petersons on a walk and followed them to the parking lot at 2020 Silver Bell Road. In an interview, he told them they “freaked him out” so he drove “fast and hit them hard.”
After striking the couple, the van sped away.
Eagan police found the Petersons struggling to breathe due to their injuries. They were taken to Regions Hospital in St. Paul, where they were pronounced dead.
Armartey fled the scene, and hours later police found him at the AmericInn Hotel at 15000 Glazier Ave. in Apple Valley, according to the complaint.
Police say they found a van matching witnesses’ description at an Eagan restaurant — La Fonda de los Lobos, on Minnesota 13 — less than a mile away from the crime scene.
Officers found Diane’s cellphone “wedged” under the windshield wiper on the van’s passenger side, according to the complaint. There was also damage to the front end of the vehicle and a crack in the windshield on the passenger side.
ARMARTEY’S VIOLENT HISTORY
Armartey has a history of criminal activity. He was on probation at the time for three felony convictions, including vehicle theft, third-degree assault of a correctional officer and fourth-degree assault of a psychiatrist.
He was also civilly committed for more than a year and a half prior to the Eagan hit-and-run based upon a psychologist’s conclusion he was not mentally competent to proceed in connection with the case involving the psychiatrist.
Wearing glasses and a gray long-sleeved shirt, Armartey kept his head down during most of Friday’s sentencing. He did not address the court, instead, he had his attorney read short letters he wrote to the judge and to Peterson’s family, apologizing for “the pain this has caused” and asking for forgiveness.
“I’m not sure if I was seeing demons or if they were in my head,” he wrote to the family. “I’m so sorry about this so much. It should have never happened.”
PETERSONS LOVED BY MANY
The Petersons had been married 37 years and had two children together. It was a second marriage for Roger, who had two children with his first wife.
On Friday, three of the children spoke before the court. They described their parents as family-oriented people of deep faith, who were loved by many.
“My mom and dad were solid rocks that I could lean on for wisdom, knowledge and strength,” said daughter Anna Stahosky of Zumbrota, Minn.
The Petersons had eight grandchildren. It was a tradition of theirs that when a grandchild turned 7 they would take them to the Badlands.
“My daughter’s turn would have been the summer of 2020,” son Conrad Peterson, of Eagan, said. “She will not have that chance now because her grandpa and grandma are not here.”
Peterson said what Armartey did was “heinous and cowardly.”
“There is no amount of time or location that the defendant could serve that would make the loss of my parents easier,” he said.