4 dead in Cessna Citation plane crash near D.C. Here's what we know so far.

Four people are dead after an unresponsive Cessna Citation airplane flew over Washington, D.C., and crashed in Virginia on Sunday, federal authorities said. The crash, which happened after the military  scrambled fighter jets to intercept the plane once it entered restricted airspace around the nation's capitol, left behind "highly fragmented" wreckage in a mountainous area that will take days to gather and sort, according to the Federal Aviation Administration.

The FAA said in a brief update that the pilot and three passengers were killed and that the plane was "destroyed" in the crash. Their identities weren't immediately released.

The plane was registered to a Florida-based company owned by John and Barbara Rumpel. Speaking to The New York Times, John Rumpel said his daughter, 2-year-old granddaughter, her nanny and the pilot were aboard the flight. In a post on a Facebook page appearing to belong to Barbara Rumpel, she wrote, "My family is gone, my daughter and granddaughter" — changing her profile picture to one that seemed to include both.