What happened
During the final phase of flight, specifically while the aircraft was conducting the landing roll on the runway, the engine suddenly lost power. Without propulsion, the airplane continued its momentum and rolled off the paved surface onto an adjacent taxiway.
Upon coming to a stop or while still moving slowly on the taxiway, the pilot initiated an attempt to restart the engine. During this process, the engine backfired. The pilot then observed flames appearing within the engine compartment. In response to the fire, the pilot moved the mixture control to the idle cutoff position and continued to crank the engine in an effort to restart it.
Despite these actions, the fire intensified rapidly. The flames grew in intensity and eventually destroyed the entire airplane.
The investigation
The available source material does not provide specific details regarding mechanical examinations or post-accident findings beyond the immediate sequence of events described above.