The Cessna Citation pilot was "slumped over" controls when F-16 pilots intercepted the plane about 30 minutes before it crashed in Virginia, officials said.

Four responders who were first to arrive at the scene of the private plane crash near Raphine, Virginia, told CNN the plane left a “crater,” and they believe it impacted the ground at a very steep angle.

The National Transportation Safety Board is leading the investigation. Officials were at the crash site Monday to begin “documenting the scene and examining the aircraft,” it said.

Federal investigators say it will take days to gather highly fragmented debris from a small plane that flew over the nation’s capital and crashed in Virginia, killing four people. The Federal Aviation Administration has said in a brief update Monday that the pilot and three passengers were killed and that the plane was “destroyed” in the crash.

No survivors were found at the crash site of a plane whose pilot was unresponsive as it flew near the Washington, DC, area Sunday, prompting military fighter jets to attempt to intercept the aircraft before it ultimately crashed,

Investigators are now piecing through the remains of a private aircraft that crashed on Sunday in Virginia. As the plane approached restricted Washington, D.C. airspace, six fighter jets were scrambled to intervene,

A sonic boom startled residents across Washington and parts of Maryland and Virginia as fighters pursued an unresponsive plane on Sunday.