This kind of crash in a twin turboprop usually involves on or more of these factors...
Engine fail/prop did not feather.
Prop governor fail.
Pilot didn't react properly to engine or prop problem.
Improper W&B combined with engine or prop failure.
Not familiar with the KA, but some prop failures can be hard or even impossible to control. W&B can do the same.
When I flew turboprops, I was always nervous about the props. I was always meticulous about the W&B.
Unless the pilot was inept, I would suspect some sort of prop failure, possibly autofeather, or W&B issue.