Butte Montana Plane Crash - Case NOT Closed

According to many first reports, including quotes from the FAA, there were 17 people killed. Then, suddenly, it became 14 dead. The plane only has 10 seats, including the pilot. Why did the pilot change his flight plan? Why hasn't the flight plan been released to the press? Who is Sheriff Walsh and why is he withholding witness reports from the press? Are there children missing?