[starbugstk]

It's the best way to get back at the old fox. 
Getting evidence to prosecute him may take longer than the remaining number of years old fox has.. and the case can drag, just like how long it had dragged before they managed to comvict ah jib kor.  In the end, the case could end up no where if old fox dies. ✖

Going after his son (s) is smart.

For someone who professed to be an English Teacher, his language proficiency sucks!
It should have been written this way ▼

The best way of course is to prosecute him with sufficient evidence before he dies otherwise the case may drag(s) on like in the case of Najib. So it makes sense to go after his children now. ✔

Convict not comvict