NTSB just finished a press briefing which I largely missed
because I'm at the airport. In what little I did see, they said there was little or no fire, but dispelled notions of fuel exhaustion by saying there was a smell of fuel present and "crashes don't always result in fires." Apparently the aircraft went down only a mile or so from the takeoff point but it took them until daybreak to discover it after it had been reported as possibly down by a "aviation monitoring center."
A bit more at
Kathryn's Report.