In the same expose, it seems like Saruk was dating Namrata but Namrata was cheating with Nimsdai on the side and when Saruk made an issue out of it, he may have been silenced by Nimsdai. Namrata holds the key to Saruk's death and she should be questioned by authority. It may have been murder made to look like suicide specially because of the suicide note which is not believable. Why would someone take time to write a suicide note saying don't blame anyone. Anyone who reaches a point in life where they commit suicide doesn't care about anything.