Helicopter 'Sounded a Little Funny' Before Crashing Into Florida Home

Federal regulators are investigating what caused a helicopter to crash into an Orlando, Florida, home, reportedly killing three people on board.

The crash happened after 2 p.m. Sunday in an upscale neighborhood.

No one was believed to be home at the time of the crash. The crash ignited a fire that was quickly brought under control.

Neighbor Mike Sills said he heard the helicopter having problems.

"It sounded a little funny, you know, sounded like it wasn't really running right," Sills said.

"I went in the back of the house with another guy and we yelled inside, hoping somebody might be alive."

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