Listen to Antoinette Tuff on the 911 call in the video below the story.
DECATUR, Ga. (AP) -- The 911 tapes from a frightening standoff and shooting at an Atlanta-area school show how a school employee's calm demeanor and kind approach helped end the ordeal without any injuries.
Police said Wednesday that school bookkeeper Antoinette Tuff was heroic in how she responded after being taken hostage a day earlier by Michael Brandon Hill, a 20-year-old man with a history of mental health issues. Hill went to the school armed with an AK 47-style rifle and nearly 500 rounds of ammunition, police said.
On a recording of a 911 call released Wednesday, Tuff can be heard relaying messages from Hill to DeKalb County emergency dispatchers before convincing him to surrender. She tells the dispatcher that Hill said he wasn't there to hurt the children but wanted to talk to an unarmed officer.
"He said, 'Call the probation office in DeKalb County and let them know what's going on,'" Tuff is heard telling the dispatcher. "He said he should have just went to the mental hospital instead of doing this, because he's not on his medication."
No one was injured, but police said the suspect shot into the floor and exchanged gunfire with officers who had surrounded Ronald E. McNair Discovery Learning Academy in Decatur, a suburb east of Atlanta. The school has 870 students in pre-kindergarten through fifth grade.
Dramatic television footage showed lines of young students racing out of the building with police and teachers escorting them to safety. They sat outside in a field for a time until school buses came to take them to their parents at a nearby Wal-Mart.
The exchange between Tuff and the suspect was captured on a recording of a 911 call made by school officials to dispatchers.
Tuff begins by telling Hill of her own struggles, including raising a disabled child and losing her husband. The bookkeeper reassured him by saying he didn't hurt anyone, hadn't harmed her and could still surrender peacefully.
"We're not gonna hate you, baby. It's a good thing that you're giving up," Tuff says after having Hill put his weapons and ammunition on the counter. Tuff tells Hill she loves him and will pray for him.
Before he surrendered, Tuff took to the school's public address system to say Hill was sorry for what he'd done and didn't want to hurt anyone -- although the lockdown remained in effect.
Hill is charged with aggravated assault on a police officer, terroristic threats and possession of a firearm by a convicted felon. Police declined to discuss what he told them when questioned.
"We have to make a reasonable assumption he was there to do harm to someone," DeKalb County Police Chief Cedric L. Alexander said.
The DeKalb County Public Defender's office said in a statement that it was representing Hill, calling him "a young man with a long history of mental health issues."
"Mr. Hill is being represented by members of our Mental Health Division and he has decided to waive his first appearance today," the statement said. "We are all very thankful that no one was hurt in this incident and that all of the children are safe."
One of the office's attorneys, Claudia Saari, wrote in an email that a preliminary hearing is scheduled for Sept. 5.
Tim Hill, the brother of the alleged shooter, told CNN's Piers Morgan on Thursday night that his brother was like a normal kid growing up, but began to change as a teenager.
"Once he started hitting his teenage years, something happened with him," Tim Hill said. "Everything just started changing after doctors started messing with his medicines here and there, and changing them up and putting him on a different one and institutionalizing him multiple times to correct his medicine. It just escalated from there."
Hill said his brother has had a troubled past. He said Michael Hill set fire to the family's home when eight people were in the house asleep, and at another point their mother awoke to find him standing over her with a butcher's knife.
"At one point my stepfather and mother ended up having to lock up...like all the knives in the trunk of the car, just to protect everybody in the home,' Tim Hill said.
Tim Hill also confirmed that his brother threatened his life on Facebook, prompting him to call police. He said he feared for his life.
The alleged shooter's brother also expressed frustration that authorities hadn't done more to deal with his brother's mental condition before Tuesday. He said he was appreciate for what Tuff did to defuse the situation Tuesday, but doesn't believe his brother would have harmed her or the schoolchildren.