The cops don’t want to jump to the obvious conclusion. Give them a couple of days to investigate, they’ll probably be able to find out what happened. If the guy is innocent, there’d be a big to-do and a bunch of lawsuits if they just arrested him.
Check out the brooks bY David Paulides. A large number of persons go missing in national parks, some as individual hikers, others just stepped away from a group. If you were with a pretty girl on a trip to the parks and she suddenly just disappeared when she got out of sight from you, what would you do if you believed her disappearance was your doing?