I'd say just to save time and face. If he was found with a bullet through his head or something like that it is not unreasonable that all airports and roads wou

I'd say just to save time and face. If he was found with a bullet through his head or something like that it is not unreasonable that all airports and roads would be closed for a while, but if it looked just like a heart attack the murderers have a bit of extra time to leave the country.