The cop likes to put words in his mouth. It's common for actually deranged people to repeat what they're told (see the homeless girl who called a nigger a nigger as an example) not because they're making an assertion but because it helps them sort out external thoughts from internal impulses. That didn't happen here, but it's common for the mentally ill to be used this way and then their words taken as a confession.
Fucked up thing is they do this to witnesses and victims too. Lots of DV convictions happen because they force the woman to testify against and innocent man.
(post is archived)