Suspicion is irrelevant.
The ME's office must determine that a homicide has occurred before a prosecutor is supposed to charge someone with unlawful homicide.
And before someone says, "You can prosecute murder even without a body for the ME to examine" -- then why wasn't Peterson charged before Laci's body was found?
But there was a body -- two of them. And the ME wasn't able to conclude the cause of death was homicide.
Unless there was other compelling evidence eliminating the other possibilities, there should have been no charge.
This case doesn't even have enough hard direct or cirsumstantial evidence for a civil case which needs only to show a preponderance of evidence.