A random post redirecting to another post (without settings to do so)

http://crime-stoppers.us/ is the site
http://crime-stoppers.us/2013/05/14/chasity-metcalf/ is the original post
http://crime-stoppers.us/2013/05/14/breaking-and-entering-at-supreme-nut-and-candy-store-2/ is the post that the above post is being directed to

There are no apparent settings in the Metcalf post that would cause it to be redirected to the Nut/Candy post. They have different post ID’s. Redirection is installed, but the Metcalf post isn’t one of the redirections.

It’s a site maintained by a client – so as far as the workflow that might have caused it, I only have to go on what they’ve told me (which is nothing much except that it was a public post, then they changed it to private).

Any thoughts?