Someone asked why the SG immigration could not have prevented Ionescu from leaving SG, but without actually arresting him, after they knew his car was involved in the fatal accident.
The answer is that SG decided to go through "due process", which in the minds of most sensible and rational countries and individuals, is actually the right way to go about it.
Unfortunately, Ionescu was certainly not going to wait for any "due process", and he fled and remains free as a bird.