Brown had requested items from a fast food seafood restaurant for himself and his hostages, and a SWAT officer carrying the food approached the house in Suwannee, about 35 miles northeast of Atlanta.
Other SWAT members set off a stun blast to distract Brown and stormed the house. Brown opened fire on the first officer as he entered the bedroom. The man was hit in the left arm by one of the shots, but managed to return fire, killing Brown. Before Brown fired, police told him to drop his weapon, Walters said.
Exposed wooden beams could be seen through a gaping hole in the side of the house Thursday and debris littered the yard. Public records indicate the red brick house with white siding is in foreclosure and has been bank-owned since mid-November.
Next to Brown's home, another brick house with tan siding appeared to have even more damage. A large area of the side was missing, again with wooden beams and insulation exposed.
Jasmin Gutierez, 12, was at home with her family in that house Wednesday afternoon. They huddled in the master bedroom at the other end of the house.
"We started, like, at least trying to get in a group hug to save ourselves because we got scared," she said. "I mean there was a lot of people, like the SWAT teams and the police."
After a while, they heard a loud bang and then they heard shooting and black smoke started to fill their home and police knocked on the door to make sure they were all right.
After the hostage-taking was reported, dozens of police and rescue vehicles surrounded the home and a negotiator was keeping in touch with the gunman, police said. The situation remained tense until the blast rocked the neighborhood of mostly two-story homes and well-kept lawns.
"The explosion you heard was used to distract the suspect, to get into the house and take care of business," Gwinnett County Police Cpl. Edwin Ritter said in a news conference minutes after the ordeal ended. He said the situation had gotten to the point where authorities believed the lives of the hostages were in "immediate danger."
"It's an unfortunate circumstance we did not want to end this way," Ritter said. "But with the decisions this guy was making, this was his demise."
Firefighters were able to use their radios to let the dispatch center know what was going on and that's how negotiators communicated with Brown initially, Walters said. Once they got his cellphone service turned back on, they were able to speak to him by phone.
Fire officials did not believe there was any danger in responding to the initial call that seemed routine and dispatched the usual one engine and one ambulance to the house.
This was the second time in recent months that firefighters have been targeted.
On Dec. 24, a man in upstate New York set his house ablaze and shot and killed two firefighters as they arrived, then himself. Two other firefighters and a police officer were wounded.
Associated Press writers Johnny Clark and Phillip Lucas contributed to this report.