Another, of course speculative, motivation may have been that the destroyed records could have thrown existing land ownership into legal doubt.
EDIT: The article speculates a cover-up. I'm speculating a make-this-messy-problem-go-away action, perhaps by someone who'd have to deal with the mess as opposed to someone who'd be embarrassed by it. On the other hand, I'm not denying that it's a cover-up.
EDIT: The article speculates a cover-up. I'm speculating a make-this-messy-problem-go-away action, perhaps by someone who'd have to deal with the mess as opposed to someone who'd be embarrassed by it. On the other hand, I'm not denying that it's a cover-up.