The city of Moscow, Idaho, has a population of 25,850 according to
census.gov.
The University of Idaho has 10,791 students, according to
Wikipedia.
If the suspect resides in Moscow, which I believe they do, there's a 41.7% chance that a student committed this crime.
I had an epiphany after reading
this article on Fox, specifically this exchange between Fox host Lawrence Jones and Idaho State Police Officer Aaron Snell.
Lawrence Jones:
"Obviously, you've got somebody that's on the loose right now. There's a lot of fear with the public based on what you guys have been able to collect. And you have profilers on the team, BAU unit is here, why not go ahead and release that profile?"
Aaron Snell:
"It will potentially put more fear, more suspicion on a wide variety of people versus if we use that to really refine where we're at in our investigation. I think that will be more pertinent."
I believe the suspect is a student or students; it's isolated and targeted. If they release the profile, it will cast "suspicion on a wide variety of people," which is 41.7% of the population of Moscow.