The pilot and four passengers were killed when a small plane crashed into a parking lot Sunday.
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"I saw the plane go down nose first," a witness can be heard telling the emergency operator.
The force of the impact left a hole about 1 foot deep in the asphalt.
DASHCAM VIDEO: Moments before small plane crashes in Santa Ana parking lot
Dashcam video: Moments before small plane crashes in Santa Ana parking lot
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Investigators are looking into the possibility that the plane fell out of the sky after running out of gas and stalling.
According to a Federal Aviation Administration spokesperson, the pilot issued a distress call shortly before the aircraft crashed into four parked vehicles.
There were no injuries on the ground.