The woman who was killed in the mass shooting in an Atlanta medical center waiting room has been identified as a 39-year-old employee of the Centers for Disease Control and Prevention.

Amy St. Pierre died after Deion Patterson, 24, allegedly opened fire Wednesday at Northside Hospital Medical Midtown, where his mother had taken him for an appointment, the Fulton County Medical Examiner’s Office said.

The Centers for Disease Control and Prevention also confirmed that she was killed in the shooting.

The “CDC is deeply saddened by the unexpected loss of a colleague killed today in the Midtown Atlanta shooting. Our hearts are with her family, friends, and colleagues as they remember her and grieve this tragic loss,” agency spokesman Benjamin Haynes told The Atlanta Journal-Constitution in a statement.

Four other women — ages 25, 39, 56 and 71 — were also maimed by gunfire.

Three of the victims were in critical condition at nearby Grady Memorial Hospital, Grady Health System Chief Medical Officer Dr. Robert Jansen said.

Patterson fled on foot after the shooting and was the subject of an hours-long manhunt. He was captured “without incident” at about 8 p.m. Wednesday at a condominium complex in suburban Cobb County outside Atlanta, Cobb County police Chief Stuart VanHooze said.

Atlanta Police Deputy Chief Charles Hampton Jr. declined to discuss details of the investigation or a possible motive for the bloodbath.

“Why he did what he did, all of that is still under investigation,” he said.

Patterson’s mother, Minyone Patterson, who is a nurse and accompanied him to the medical office, told The Associated Press that her son, a former Coast Guardsman, had “some mental instability going on” from medication he received from the Veterans Affairs health system and began taking Friday.

She said he had wanted Ativan to deal with anxiety and depression but that the VA wouldn’t give it to him because they said it would be “too addicting.” She said she told them he would only have taken the proper dosage “because he listened to me in every way.”

“Those families, those families,” the mother said, crying. “They’re hurting because they wouldn’t give my son his damn Ativan. Those families lost their loved ones because he had a mental break because they wouldn’t listen to me.”

Meanwhile, it has emerged that Patterson has had several run-ins with the law.

In 2017, he was charged with driving under the influence, leaving the scene of a crash, improper lane change and not having insurance, The Atlanta-Journal Constitution reported, citing Clayton County court records. Those charges were reportedly dropped later that year.

In 2015, Patterson was arrested on a charge of marijuana possession and in 2017, he was arrested twice on charges of probation violation, the Henry County Sheriff’s Office said.

And in 2020, he was cited for three traffic violations in Saint Louis County and Phelps County, Missouri, according to court records.

Patterson — who reportedly holds fishing and hunting licenses in Georgia — was discharged from the Coast Guard in January, according to the Journal-Constitution. It was unclear why.

“Our deepest sympathies are with the victims and their families,” the Coast Guard said in a statement. “The Coast Guard Investigative Service is working closely with the Atlanta Police Department and local authorities in the investigation.” 

Atlanta Mayor Andre Dickens expressed his relief that Patterson was taken into custody alive so he can be prosecuted.

“Right now, we’ve had a successful end to a traumatic day,” Dickens said, while also advocating for more stringent gun laws and stressing the importance of police training.

“I hope the city, the region, rests easy that he is in custody, but I also hope that we will stay vigilant to continue to look at a future where individuals who shouldn’t have a gun in possession won’t have one, and also that individuals are brought to justice, and also that we deal with these things that are mental health or easy access to guns,” Dickens said.