Who deleted the “assassinated” RFA reporter’s Face book postings? His killers?

Sabotage suspected!
Why delete the ?assassinated RFA reporter’s Face book postings?
To cover-up?
I think the family and friends are in shock and grieve, they may even do not think about deletion of his FB. Instead, they may keep as a remembrance.
Myanmar Authorities WOULD NOT INVESTIGATE on this clue.
International Journalists should follow this clue.