Atlanta mass shooting updates: Victims identified

"The Northside Hospital family is grieving" in the wake of Wednesday's mass shooting in a waiting room at the Northside Medical Midtown office, Northside Hospital said in a statement on Thursday.

The hospital is encouraging people, wherever they are, to "take a moment or two" on Friday to "pause and reflect" in what the hospital is calling a "Day of Reflection."

"We deeply love and support the employees and patients who were directly involved, as well as others impacted in different ways," the hospital said. "Let us hope that this kind of tragedy never happens again -- not to us, not to anyone."

Hospital officials added, "We are incredibly grateful for the quick and courageous response of Atlanta-area law enforcement. Northside also thanks our colleagues at Grady Memorial Hospital for the care being provided to the victims. Their actions brought comfort and safety to our patients and staff at Northside Medical Midtown."

-ABC News' Will McDuffie

Three of the four women who were shot and injured remain in the intensive care unit, Dr. Robert Jansen, the chief medical officer at Grady Health, said at a news conference Thursday.

Two of those three women are "critical" and will return to the operating room for additional procedures, he said. The third patient in intensive care is stable and hopefully can move out of the ICU later in the day, he said.

The fourth woman who was shot is in stable condition, he said.

"As of right now everybody is as stable as they can be given the nature of their injuries," Jansen said.

Jansen said he's spoken with two of the injured victims.

"They have been traumatized," he said.

"They are very grateful for the support and care they've received," he said, however, "the fact that they were in a health care facility just makes it worse."

Jansen noted that "the impact" of this shooting "on the staff is something you can't imagine."

"Unfortunately, in this day and age, seeing shooting victims is almost a daily occurrence here," he said.

"But when they come in like this, particularly because it happened in a health care setting, it resonates more," he said, adding that the hospital staff is being offered support.

The suspected gunman, 24-year-old Deion Patterson, has been charged with one count of murder and four counts of aggravated assault.

He waived his Thursday court appearance, according to Atlanta ABC affiliate WSB.

The suspected gunman, 24-year-old Deion Patterson, was armed with a semi-automatic handgun when he allegedly shot five people in a medical center waiting room, according to court documents.

The documents identify the surviving victims as Georgette Whitlow, Lisa Glynn, Jazzmin Daniel and Alesha Hollinger. All four of them remain hospitalized.

Hollinger was shot in the face, according to the documents, while Daniel was shot multiple times in the abdomen. Whitlow was shot in the arm and Glynn was shot in the abdomen.

Amy St. Pierre, 39, an employee of the Centers for Disease Control and Prevention, was killed in Wednesday's shooting.