Editor's Note: An Atlanta police department helicopter crashed late Saturday night on a city street just a few miles from downtown, killing both officers on board.  See full story.

Here are the latest developments:

[Update 1:45 a.m.]  The missing 9-year-old has been found and is in the hands of the police, authorities said today.

[Update 1: 30 a.m.] Atlanta Police Chief George Turner briefed reporters and offered the following details:
- Two Atlanta police officers who were in the chopper were killed.

- The helicopter unit was called in to assist with the search for a missing 9-year-old child.

- The chopper was flying low so that the officers were better able to see.

- There were no injuries on the ground.

- The Federal Aviation Administration and the National Transportation Safety Board are both investigating.

[Update 1:01 a.m.] The crash has knocked out power to 1,300 Georgia Power customers, a spokesman for the electricity company said. "We believe the outage is because of the helicopter crash," said spokesman John Kraft. "I don't know specifics of what happened in that crash. We believe it is a result of the helicopter coming in contact with the lines at some point."

 [Update 1 a.m.] The FAA says two people were on board the chopper when it crashed but the agency deferred questions about their conditions to the Atlanta police department.

[Update 12:26 a.m.]

Television footage from affiliates show a convoy of police cars at the site of the crash

[Updated 11:57 p.m.] Police spokesman Carlos Campos just sent out this e-mail, asking that media not report "unconfirmed" information about casualties:

One of our helicopters has crashed near MLK Jr and Hamilton E. Holmes around 10:30 p.m. Public Affairs personnel are on scene and gathering information. We ask you to respectfully refrain from releasing unconfirmed information. We understand you are needing information. You will get it. Just give us time to gather facts. We will announce a briefing location soon.

[Posted at 11:52 p.m.] A helicopter for the  Atlanta Police Department crashed tonight in northwest Atlanta.  Authorities are at  the scene.  More details soon.