I don't believe anything. I just look at what's there. The audio is there. There's a lot of ways it could have gotten there. The team of "professional killers" could have been operating back and forth between frequencies and the person in question mistakenly broadcast over the wrong one. It was picked up by a close by open mic, IE someone talking into a mic behind a police officer with his open channel mic open.
I don't know how it's there, but arguing that it's can't be what it appears because it's unfathomable to you, isn't really a sound argument. It doesn't erase the fact that it exists.
this is ridiculous dude. you're bending over backwards.