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ATLANTA — A man charged in a string of shootings near Atlanta that left three people dead, including a Department of Homeland Security employee who was walking her dog, died in jail Tuesday night, authorities said.

Olaolukitan Adon Abel, 26, was found unresponsive in his cell, according to a statement from the DeKalb County Sheriff’s Office. Officials provided medical treatment to the U.S. Navy veteran, but he was later pronounced dead.

The official cause of death has not been determined, but officials don’t suspect foul play, according to the office. Officials are conducting an internal review.

Adon Abel was accused of killing Prianna Weathers, 31, and Homeland Security auditor Lauren Bullis, 40, in last week’s attack. Authorities also had been seeking an additional murder charge for Tony Mathews, 49, who was injured in the attack and died Sunday.

Authorities haven’t offered a potential motive for the shootings. It’s unclear if Adon Abel knew any of the victims. Police have said they believe at least one was targeted at random.

Adon Abel was represented by a public defender, and the state council overseeing defenders’ work said Wednesday in a statement that his death denies him “the opportunity to contest the charges in court.”

“We also regret that the families, friends, and colleagues of the victims may now be left without the fuller answers a public legal process might have provided about how these deaths occurred,” the statement said. “That is a painful and sobering reality for everyone affected.”

Adon Abel faced state malice murder, aggravated assault and gun charges over last week’s attacks, court records show. He also faced a federal charge of illegally possessing the gun as a person previously convicted of a felony, which was filed Friday.

His roommates told the Associated Press that shortly before the shootings, he got in an intense argument over the air conditioning in their home and stormed out. He lived with six others in separate units of the home.

The United Kingdom native was granted U.S. citizenship in 2022 while serving in the U.S. Navy and stationed in the San Diego area.

The attacks in Georgia quickly drew the Trump administration’s attention, with Homeland Security Secretary Markwayne Mullin raising concern that Adon Abel was granted U.S. citizenship when Democrat Joe Biden was president. Mullin cataloged a litany of Adon Abel’s previous alleged crimes, but it is unclear whether any of them occurred before he became a citizen.

Military records show the Adon Abel enlisted in the Navy in 2020, last serving in the Helicopter Maritime Strike Squadron in Coronado, Calif., and as a petty officer received a Navy “E” Ribbon for superior performance for battle readiness.

Adon Abel pleaded guilty in October 2024 to assaulting two police officers with a deadly weapon and attacking another person when he was stationed in Coronado, near San Diego, according to California court records.

The attorney who represented him in that case, Brandon Naidu, has described him as polite, calm and soft-spoken in their interactions. He said Wednesday that his obligation to protect the confidentiality of their conversations limits what he can say publicly but, “Mental health was absolutely at the center of his San Diego case.” ““t was fueled by suicidal ideation as a result of mental health that he was self-treating with substances,” he said.

He added: “Nobody wins in this. We’ll never know the motives, what could have been done beforehand or even afterward. Nobody gets proper closure on this.”

Hanna and Golden write for the Associated Press. Hanna reported from Topeka, Kan., and Golden, from Seattle.

ATLANTA — An Atlanta man has been charged in a string of attacks over a matter of hours that left two women dead and a man in critical condition, drawing the Trump administration’s attention after one of the victims was identified as a Department of Homeland Security employee who was walking her dog.

The killing of the Homeland Security worker, Lauren Bullis, and shootings of the two other victims on Monday led Homeland Secretary Markwayne Mullin to issue a statement raising concerns that the 26-year-old defendant, U.K.-native Olaolukitan Adon Abel, was granted U.S. citizenship in 2022, when Democrat Joe Biden was president.

“These acts of pure evil have devastated our Department and my prayers are with the families of the victims,” Mullin wrote in a statement posted on social media, cataloging a litany of the defendant’s previous alleged crimes but not specifying whether they happened before he was granted citizenship.

Authorities have said they believe at least one of the victims, the man who was wounded, was targeted at random. They said they were still looking into whether the other two victims were also picked randomly.

A morning of violence

The first victim was found with multiple gunshot wounds near a restaurant in the Decatur area around 1 a.m. Monday. She was taken to a hospital but died, DeKalb County Police Chief Gregory Padrick said at a news conference. Police have not publicly identified her.

About an hour later in Brookhaven, another Atlanta suburb less than 15 miles northwest of the first attack, a 49-year-old homeless man who was sleeping outside a grocery store was shot multiple times, city Police Chief Brandon Gurley said. The man, whose name hasn’t been released, remains hospitalized in critical condition.

“It is apparent to us that it was a completely random attack on a member of our unhoused community,” Gurley said.

Just before 7 a.m. and more than 10 miles away in the suburb of Panthersville, officers responding to a call found a woman with gunshot and stab wounds, Padrick said. The woman, Bullis, died at the scene. Investigators in Brookhaven determined that the three attacks were connected, Gurley said.

Adon Abel was taken into custody later Monday during a traffic stop in Troup County, which borders Alabama. He is charged with two counts of malice murder, aggravated assault and firearms counts, court records show. He waived an initial court appearance Tuesday. Court records don’t list an attorney who might speak on his behalf.

Reached by phone Wednesday, Toyin Adon Abel Jr. said he didn’t want to talk about his brother. But he expressed sympathy for the victims: “I feel terrible for the victims, their families and their connections. It’s a horrible thing,” he said.

Remembered for her warmth and compassion

Bullis served in multiple roles at Homeland Security’s Office of Inspector General, including as an auditor in the Office of Audits and as a team leader in the Office of Innovation, the department posted on social media, saying she brought “warmth, kindness, and a genuine sense of care to her colleagues each day.”

In a statement, Bullis’ family remembered her as “selfless, kind and compassionate.”

“She deeply loved her family and found joy in running, reading and traveling,” the family said. “Her warmth and generosity touched everyone surrounding her.”

Fellow Homeland Security auditor Ashley Toillion of Denver said she met Bullis at a work conference last year. The two became fast friends as they bonded over running and quickly made plans for Bullis join Toillion in a race at Walt Disney World.

“You couldn’t meet her and not be her friend,” Toillion said, choking back tears. “She was just the nicest, sweetest, most encouraging person I’ve ever met.”

Mullin, who took over Homeland Security last month after Kristi Noem was fired, said in his statement that Olaolukitan Adon Abel has a criminal record that includes a sexual battery conviction, though he didn’t say which year he was convicted. Online court records show that someone listed as Adon Olaolukitan, who has the same birth date as Adon Abel, pleaded guilty in June in Chatham County, Ga., to four misdemeanor counts of sexual battery.

In his statement, Mullin noted that since President Trump took office, U.S. Citizenship and Immigration Services, which Homeland Security oversees, has worked to ensure that people with criminal histories don’t attain citizenship. But the U.S. has long barred people convicted of most violent felonies from becoming citizens, and it wasn’t immediately clear whether Adon Abel — or Adon Olaolukitan, if it’s the same person — had a criminal record that predated him becoming a citizen in 2022.

In response to a request for further details about the case and the defendant’s criminal history, Homeland Security referred the Associated Press to its post about Bullis and her death.

Brumfield and Rico write for the Associated Press. Brumfield reported from Cockeysville, Md. AP writer Rebecca Boone in Boise, Idaho, contributed to this report.