A video claiming to show Prigozhin's jet plummeting from the sky and the plane's fiery wreckage could be starting points for an investigation into the crash — if a fair investigation is possible, aviation expert says

• On Wednesday, Russian officials said Wagner Group leader Yevgeny Prigozhin died in a plane crash.
• An aviation expert laid out to Insider what investigators would look for in terms of evidence.
• That's provided that a fair investigation can happen, given Prigozhin's failed rebellion. 

The plane said to be carrying Wagner boss Yevgeny Prigozhin to his demise appeared to be engulfed in flames at the crash site, which could give investigators immediate clues as to what happened during the flight's last moments, an aviation expert who analyzed a purported video of the crash told Insider.