It is a fact that the Immigration records of Altantuuya were deleted but surprisingly the DG was not asked to explain at the murder case.
That created a major puzzle for many Malaysians.
You can read the about the ongoing probe in this malaysiakini article:
"20 nabbed so far in visa scam sweep"
Now that the ACA seems to have uncovered a web of corruption that involves senior officers in the department, it is important that possible links to the murder case be investigated.