Private Jet Flies Erratic Route Before Crashing in Virginia Mountains at High Speed

A private Cessna plane crashed after changing course and flying into restricted airspace over Washington, DC, killing all four onboard according to federal investigators.
The pilot lost contact with air traffic controllers shortly before crashing into a mountainside at high velocity and nearly vertical descent.
The cause of the crash remains unknown but lack of oxygen may have led the pilot to lose consciousness during the flight.
No cockpit voice recorder or flight data recorder has been recovered yet according to the National Transportation Safety Board's preliminary report.
The jet reached an altitude of 34,000 feet, higher than initially requested, before making a 180-degree turn and veering off course.