SBM
This is an opinion. Others hold a different opinion. In fact, in the last quote, LE uses the term "identified". Some may see that as they have no idea who would be a suspect. Others see it as in line with their other statements that they are not calling Mark a suspect, no named suspects, etc. As far as POI goes, there's a link here somewhere that explains POI simply means someone LE would like to speak with in regard to an investigation. Given that they interviewed Mark, searched his home several times, administered a poly, have stated there have been no confirmed sightings, speak with Mark every Thurs etc, it seems he qualifies as a POI, IMO.
link
and more
"The Sheriff's Office is not calling Mark Redwine a suspect,"
link
According to Mark, "we're all suspects"
Blasius
"The bottom line is were all suspects regardless of what the law enforcement says"
Dr Phil 1
As for evidence:
Investigators say they have a wealth of evidence, but still no leads and no named suspect.
We have gathered
so many little pieces of evidence, its kind of like a jigsaw puzzle and now youre just looking for that one piece to bring everything together, Bender said.
link BBM
Moo