ATLANTA -- CBS 46 News has learned it took crews an hour to get to a woman's apartment after a mistake by a 911 operator. That new information came Wednesday from Johns Creek officials.

Fulton County officials said the 911 operator sent emergency responders to the wrong address.

Fulton County's 911 director, Alfred Moore, said it began Saturday afternoon when Darlene Dukes called 911 for help because she was "in respiratory distress."

Moore said the 911 operator misheard the address Dukes gave and sent crews to Wells Street in Atlanta when Dukes was actually at home on Wales Street in Johns Creek, north of Atlanta.

When the operator realized she made a mistake, fire crews from a station in Johns Creek were dispatched. The station is only five minutes from Dukes' home.

"Something went wrong, and I would like to find out what happened," said her mother, Ida Dukes.

Moore said the operator should have noticed that the call was coming from a cell tower in north Fulton County, not Atlanta.

The 911 operator has been fired.

Dukes' family said Tuesday they are still in shock over her death.

"Darlene was a beautiful girl in the prime of her life," said brother Derrick Dukes.

"My child would be alive today if they had responded timely," Ida Dukes said.

Fulton County officials said Wednesday that they will get the 911 tapes from the incident and will hold a thorough review of the case.